PHY 221 Lab 5 Diverse Forces, Springs and Friction
|
|
- Leo Blake
- 6 years ago
- Views:
Transcription
1 Name: Partner: Partner: PHY 221 Lab 5 Diverse Forces, Springs and Friction Goals: To explore the nature of forces and the variety of ways in which they can be produced. Characterize the nature of springs and to investigate friction. Materials: Computer-based measurement system cart and two wireless force probes (or one wireless and one wired) Spring scales Masses A variety of force-producing systems. See PRELAB page 11. Activity: 1. Exploring and characterizing forces You are already very familiar with some forces from last week s lab. However, there are many kinds of forces. There are a number of different force-generating devices or systems that you can bring back to your station to study (see the Appendix attached at the end). Be sure that your choices are as dissimilar as possible and do not include springs as they are reserved for activity 2. Your team should bring back one at a time, then fill out the lab sheet according to these instructions: 1
2 a. Describe the kind of force. b. How strong is the force? Can it reach hundreds of Newtons? A couple of Newtons? A fraction of a Newton? Less? You can use spring scales of different range or computerized force probe to explore magnitude of the force. Use small coil spring to probe the weakest forces (first see how much force is needed to stretch this coil out). c. What does that strength depend on? (for example: distance between something and another thing, velocity, mass, electric charge, weight, chemistry, amount of squeeze/stretch,...) Does the force depend on contact between things? d. What is the direction of the force? (for example: attractive, repulsive, against direction of motion, upwards, downwards, outwards,...) Note that by asking you to give the magnitude and direction of the force, we are asking you to characterize a vector. 1) Kind of force: Strength of force: What strength depends on: Direction of force: 2) Kind of force: Strength of force: What strength depends on: 2
3 Direction of force: 3) Kind of force: Strength of force: What strength depends on: Direction of force: 4) Kind of force: Strength of force: What strength depends on: Direction of force: 3
4 2. Springs We all think of springs as coils of metal. A more general way to think of a spring is as something that changes the location of one of its ends when you pull or push on it, by an amount that depends on how hard you push or pull. Springs of the ordinary coil-shaped sort are at the heart of your spring scale. Here we want to explore other kinds of springs. For each spring, give a description, state whether it works in tension (by stretching) or in compression (by squeezing) or transversely (by moving sideways), and measure how far its end moves for a given force. Check whether it moves by twice as much when you give twice as large a force, and that it comes back to its original state when you remove all of the external forces. A spring that does this is said to obey Hooke's Law. As part of the characterization below since you have a force probe and you have a ruler you should plot an extension-force curve for each spring and plot it on the computer. To set this up go to Experiment/Data Collection. Chose Events with entry. Enter Column Name as extension distance short name distance. Click on Collect. Click on the Keep symbol (the iris diaphragm) which is to the right of the green Collect button when the spring extension is at the desired extension distance. Then the force at that distance will be automatically entered associated with the extension distance that you will type in from reading the ruler following each Keep action. In this way collect all the needed values. Be sure to enter into the computer the actual distances in cm. Your instructor will show you the variety of springs to study. Spring 1 (tension) description and characterization as above: 4
5 Spring 2 (compression) description and characterization (Make an additional column and plot as an additional curve): Spring 3 (constant force) description and characterization: (Make an additional column in your data table and plot as an additional curve): PRINT all three extension force curves 3. Friction Use the cart with no mounting bracket. Unlike previous uses of the cart, this time turn the cart upside down, so that the wheels are pointing upwards. Put two rectangular weights on top of the cart to increase its mass. Tie a piece of string to the hook on the force probe, and tie the other end to a convenient spot at one end of the cart. Zero the tethered Force Probe or the Wireless Force Probe. Get ready to move the cart by pulling on the force probe. The string should be stretched but no detectable force should be applied to it. Start collecting the data with the cart at rest. Start applying the force. Do it very gently so you can explore range of forces 5
6 for which the cart is still at rest. If you can, make the force increase linearly with time. Once the cart starts moving try to maintain constant force and constant speed of the cart. Then suddenly increase the pulling force and make the object accelerate. Since this is going to be printed out, you may wish to repeat this experiment until it looks good. PRINT all four graphs to add to this report. Underline the print out indicate 1, 2, 3, 4 and 5 second marks on the time axes for each plot. When reading your graphs pay attention to where the zero on vertical axis is, and draw on your print out the moment or point at which there was a change of trend in the measured quantity. Identify on the print out of the graphs when the force was already applied but the cart was still at rest. Indicate this range by vertical bars on the force vs. time graph and label it Region 1. Mark the same time period on the other three graphs. The force we measured here is clearly not zero, but since the cart is at rest it has zero velocity and acceleration. Doesn t this contradict the F = ma law? Explain. What force F do you use in the equation F = ma? The new force, which came into play here, is called static friction. Draw a free body diagram for the cart and indicate the static friction force, fs, and the force exerted by the string on the cart, T. Which force is measured by the force probe? 6
7 Does static friction have a constant magnitude? Can static friction assume any value? Now on the print out of your velocity vs. time graph, indicate when the cart was moving with approximately constant velocity. Mark this time period with vertical bars and label it Region 2. Mark the same time interval on the other three graphs. Since velocity is approximately constant, the position vs. time graph should be linear and acceleration should be approximately zero. Check it with the computer. Again, the measured force is not zero but there is no acceleration. The force exerted on the cart, T, is balanced by the force of kinetic friction, fk. Unlike static friction force, kinetic friction force does have a constant magnitude independent of the force it opposes. Thus when T is increased fk cannot balance it and the object accelerates. Identify time interval on your graphs that corresponds to this of motion and mark it Region 3. We will now quantitatively investigate the force of kinetic friction. We can obtain magnitude of this force from the Region 2, since here, T = fk. Stretch a selection range on the force vs. time graph to cover the Region 2. Then go to Analyze menu and click on Statistics. Make sure that the selection bars don t disappear when you do that. Store the mean value of the force in this range (displayed in the superimposed box) in the table below. Remove one rectangular weight from the cart. Zero the force probe. Repeat the experiment. This time you just need to concentrate on obtaining motion with constant velocity ( Region 2 ). Stretch the selection range on the force vs. time graph for the Region 2, and obtain mean force value in this time interval. Store it in the table. Finally, take the second weight off and repeat the measurement process for the cart alone. Remember to zero the force probe before taking data. 7
8 Object Cart with two rectangular weights fk (N) Mass measured with a balance - m (kg) Coefficient of kinetic friction Cart with one rectangular weight Cart by itself Measure mass of the cart with and without weights using a balance and store your measurements in the table. Sketch here a graph of fk vs m. What kind of simple function could describe dependence of fk on m? 8
9 Complete the table by calculating coefficient of kinetic friction: k = fk / N. Here N is a normal force exerted by the track on the cart. Since the cart is not moving in vertical direction this force balances the weight of the cart: N=mg. (Include N and mg on your free body diagram). This coefficient should not depend on the force applied to the cart, mass of the object, nor the area of the surfaces that are in touch. It does depend on type of the surfaces that are at friction. Do the results for the coefficient roughly agree between the three measurements? Since static friction is not a constant force, coefficient of static friction is not defined as s = fs / N. You may have noticed that the maximal value of the static friction decreases with the mass of the object. In fact, coefficient of static friction is defined as s =(maximal fs) / N. Coefficients of static and kinetic friction are usually similar but not identical. It is obvious that if they are not equal then, s k. This can be observed as slight drop in the measured force as you transit from Region 1 (object at rest) to Region 2 (motion with constant velocity). Do you see the effect on the force vs. time graph that you copied to your report? If you don t try to take data again (cart with two weights on) concentrating on the moment when the cart starts moving, don t apply more force than needed to keep it in motion. Invert the cart and put it back on its wheels with two weights on top. Measure coefficient of kinetic friction. Show your result here, and compare it to the value obtained before. 4. Forces between a pushed mass (your chance to design your own experiment) Suppose you had two carts on a frictionless track, one with two rectangular weights attached and one without added weights. Suppose these carts were placed together and you pushed one of them with a set force. What would you expect the force to be 9
10 from the first cart to the second if the heavier cart (m1) was being pushed with a force, F, and if the lighter cart (m2) was being pushed with the same force? Would the inter-cart force be F or some other value? What would the force be from the second cart to the first if the heavier cart (m1) was being pushed with a force, F, and if the lighter cart (m2) was being pushed with the same force? Try it. Put a Wireless Force Probe on the lighter cart. Use the tethered Force Probe to push the first cart with a measured force, F. Do an experiment to test your expectation and describe it below. Create the appropriate graph of results and PRINT it out. Appendix to PHY 221 Lab 5: Examples of Forces: 1. Muscles two opposed sets since force can only be applied with shortening the muscle 2. Weights 3. Tension in strings or ropes 4. Force between two magnets 5. Electrostatic force (two balloons, charged by rubbing on hair or on sweater) 6. Buoyancy (boat floating in water) 7. Air pressure (air pump and bicycle tire) 8. Air exhaust rocket (balloon) 9. Chemical bonds between layers of adhesive tape 10. Sliding friction 11. Air friction 12. Fluid friction 13. Friction from magnet-induced currents ( eddy currents ) 10
11 Name: Lab 5 prelab Two blocks are in contact on a frictionless table. A horizontal force is applied to the m1 block as shown in figure below. What is the force of contact between the two blocks? What would the force of contact be if the horizontal force were applied to m2 rather than m1? F Is the force of contact between the two masses different? Why or why not? 11
PHY 221 Lab 9 Work and Energy
PHY 221 Lab 9 Work and Energy Name: Partners: Before coming to lab, please read this packet and do the prelab on page 13 of this handout. Goals: While F = ma may be one of the most important equations
More informationPHY 221 Lab 7 Work and Energy
PHY 221 Lab 7 Work and Energy Name: Partners: Goals: Before coming to lab, please read this packet and do the prelab on page 13 of this handout. Note: originally, Lab 7 was momentum and collisions. The
More informationStatic and Kinetic Friction
Experiment Static and Kinetic Friction Prelab Questions 1. Examine the Force vs. time graph and the Position vs. time graph below. The horizontal time scales are the same. In Region I, explain how an object
More informationPrelab for Friction Lab
Prelab for Friction Lab 1. Predict what the graph of force vs. time will look like for Part 1 of the lab. Ignore the numbers and just sketch a qualitative graph 12-1 Dual-Range Force Sensor Friction and
More informationLAB 4: FORCE AND MOTION
Lab 4 - Force & Motion 37 Name Date Partners LAB 4: FORCE AND MOTION A vulgar Mechanik can practice what he has been taught or seen done, but if he is in an error he knows not how to find it out and correct
More informationLAB 6: WORK AND ENERGY
93 Name Date Partners LAB 6: WORK AND ENERGY OBJECTIVES OVERVIEW Energy is the only life and is from the Body; and Reason is the bound or outward circumference of energy. Energy is eternal delight. William
More informationLAB 3: WORK AND ENERGY
1 Name Date Lab Day/Time Partner(s) Lab TA (CORRECTED /4/05) OBJECTIVES LAB 3: WORK AND ENERGY To understand the concept of work in physics as an extension of the intuitive understanding of effort. To
More informationStatic and Kinetic Friction
Experiment 12 If you try to slide a heavy box resting on the floor, you may find it difficult to get the box moving. Static friction is the force that is acting against the box. If you apply a light horizontal
More informationLAB 6 - GRAVITATIONAL AND PASSIVE FORCES
83 Name Date Partners LAB 6 - GRAVITATIONAL AND PASSIVE FORCES OBJECTIVES OVERVIEW And thus Nature will be very conformable to herself and very simple, performing all the great Motions of the heavenly
More informationStatic and Kinetic Friction
Static and Kinetic Friction If you try to slide a heavy box resting on the floor, you may find it difficult to get the box moving. Static friction is the force that is counters your force on the box. If
More informationChapter 5 Force and Motion
Chapter 5 Force and Motion Chapter Goal: To establish a connection between force and motion. Slide 5-2 Chapter 5 Preview Slide 5-3 Chapter 5 Preview Slide 5-4 Chapter 5 Preview Slide 5-5 Chapter 5 Preview
More informationLab 4: Gauss Gun Conservation of Energy
Lab 4: Gauss Gun Conservation of Energy Before coming to Lab Read the lab handout Complete the pre-lab assignment and hand in at the beginning of your lab section. The pre-lab is written into this weeks
More informationJuly 19 - Work and Energy 1. Name Date Partners
July 19 - Work and Energy 1 Name Date Partners WORK AND ENERGY Energy is the only life and is from the Body; and Reason is the bound or outward circumference of energy. Energy is eternal delight. William
More informationLAB 6: WORK AND ENERGY
89 Name Date Partners LAB 6: WORK AND ENERGY OBJECTIVES Energy is the only life and is from the Body; and Reason is the bound or outward circumference of energy. Energy is eternal delight. William Blake
More informationSection /07/2013. PHY131H1F University of Toronto Class 9 Preclass Video by Jason Harlow. Based on Knight 3 rd edition Ch. 5, pgs.
PHY131H1F University of Toronto Class 9 Preclass Video by Jason Harlow Based on Knight 3 rd edition Ch. 5, pgs. 116-133 Section 5.1 A force is a push or a pull What is a force? What is a force? A force
More informationCh.8: Forces as Interactions
Name: Lab Partners: Date: Ch.8: Forces as Interactions Investigation 1: Newton s Third Law Objective: To learn how two systems interact. To identify action/reaction pairs of forces. To understand and use
More informationExperiment 7 : Newton's Third Law
Experiment 7 : Newton's Third Law To every action there is always opposed an equal reaction, or the mutual actions of two bodies upon each other are always equal, and directed to contrary parts. If you
More informationMASSACHUSETTS INSTITUTE OF TECHNOLOGY Physics Department. Physics 8.01L IAP Experiment 3: Momentum and Collisions
MASSACHUSETTS INSTITUTE OF TECHNOLOGY Physics Department Physics 8.01L IAP 2011 Experiment 3: Momentum and Collisions Purpose of the Experiment: In this experiment you collide a cart with a spring that
More informationA Question about free-body diagrams
Free-body Diagrams To help us understand why something moves as it does (or why it remains at rest) it is helpful to draw a free-body diagram. The free-body diagram shows the various forces that act on
More informationChapter 4. Forces and the Laws of Motion. CH 4 Forces and the Laws of Motion.notebook. April 09, Changes in Motion. A. Force
CH 4 Forces and the Laws of Motion.notebook Chapter 4 A. Force April 09, 2015 Changes in Motion Forces and the Laws of Motion 1. Defined as the cause of an acceleration, or the change in an object s motion,
More informationLesson 8: Work and Energy
Name Period Lesson 8: Work and Energy 8.1 Experiment: What is Kinetic Energy? (a) Set up the cart, meter stick, pulley, hanging mass, and tape as you did in Lesson 5.1. You will examine the distance and
More informationSafety: BE SURE TO KEEP YOUR SMART CART UPSIDE-DOWN WHEN YOU RE NOT ACTIVELY USING IT TO RECORD DATA.
Why do people always ignore Objective: 1. Determine how an object s mass affects the friction it experiences. 2. Compare the coefficient of static friction to the coefficient of kinetic friction for each
More informationPHYSICS 211 LAB #3: Frictional Forces
PHYSICS 211 LAB #3: Frictional Forces A Lab Consisting of 4 Activities Name: Section: TA: Date: Lab Partners: Circle the name of the person to whose report your group printouts will be attached. Individual
More informationFree-Body Diagrams: Introduction
Free-Body Diagrams: Introduction Learning Goal: To learn to draw free-body diagrams for various real-life situations. Imagine that you are given a description of a real-life situation and are asked to
More informationStatic and Kinetic Friction
Dual-Range Force Sensor Computer 12 If you try to slide a heavy box resting on the floor, you may find it difficult to get the box moving. Static friction is the force that counters your force on the box.
More informationEngage I 1. What do you think about this design? If the car were to suddenly stop, what would happen to the child? Why?
AP Physics 1 Lesson 4.a Nature of Forces Outcomes Define force. State and explain Newton s first Law of Motion. Describe inertia and describe its relationship to mass. Draw free-body diagrams to represent
More informationChapter 4. Forces and Newton s Laws of Motion. continued
Chapter 4 Forces and Newton s Laws of Motion continued Quiz 3 4.7 The Gravitational Force Newton s Law of Universal Gravitation Every particle in the universe exerts an attractive force on every other
More informationForce and Motion 20 N. Force: Net Force on 2 kg mass = N. Net Force on 3 kg mass = = N. Motion: Mass Accel. of 2 kg mass = = kg m/s 2.
Force and Motion Team In previous labs, you used a motion sensor to measure the position, velocity, and acceleration of moving objects. You were not concerned about the mechanism that caused the object
More informationIsaac Newton ( ) 1687 Published Principia Invented Calculus 3 Laws of Motion Universal Law of Gravity
Isaac Newton (1642-1727) 1687 Published Principia Invented Calculus 3 Laws of Motion Universal Law of Gravity Newton s First Law (Law of Inertia) An object will remain at rest or in a constant state of
More informationApplications of Newton's Laws
Applications of Newton's Laws Purpose: To apply Newton's Laws by applying forces to objects and observing their motion; directly measuring these forces that are applied. Apparatus: Pasco track, Pasco cart,
More informationChapter Four Holt Physics. Forces and the Laws of Motion
Chapter Four Holt Physics Forces and the Laws of Motion Physics Force and the study of dynamics 1.Forces - a. Force - a push or a pull. It can change the motion of an object; start or stop movement; and,
More informationPHYSICS. Chapter 5 Lecture FOR SCIENTISTS AND ENGINEERS A STRATEGIC APPROACH 4/E RANDALL D. KNIGHT Pearson Education, Inc.
PHYSICS FOR SCIENTISTS AND ENGINEERS A STRATEGIC APPROACH 4/E Chapter 5 Lecture RANDALL D. KNIGHT Chapter 5 Force and Motion IN THIS CHAPTER, you will learn about the connection between force and motion.
More informationPHYSICS. Chapter 5 Lecture FOR SCIENTISTS AND ENGINEERS A STRATEGIC APPROACH 4/E RANDALL D. KNIGHT Pearson Education, Inc.
PHYSICS FOR SCIENTISTS AND ENGINEERS A STRATEGIC APPROACH 4/E Chapter 5 Lecture RANDALL D. KNIGHT Chapter 5 Force and Motion IN THIS CHAPTER, you will learn about the connection between force and motion.
More informationChapter 4. Forces in One Dimension
Chapter 4 Forces in One Dimension Chapter 4 Forces in One Dimension In this chapter you will: *VD Note Use Newton s laws to solve problems. Determine the magnitude and direction of the net force that causes
More informationPRELAB: COLLISIONS Collisions, p. 1/15
PRELAB: COLLISIONS Collisions, p. 1/15 1. What is your Prediction 1-7 when the truck is accelerating? Explain the reasoning behind your prediction. 2. If you set up the force probes according to the instructions
More informationLecture 6 Force and Motion. Identifying Forces Free-body Diagram Newton s Second Law
Lecture 6 Force and Motion Identifying Forces Free-body Diagram Newton s Second Law We are now moving on from the study of motion to studying what causes motion. Forces are what cause motion. Forces are
More informationEXPERIMENT 7: ANGULAR KINEMATICS AND TORQUE (V_3)
TA name Lab section Date TA Initials (on completion) Name UW Student ID # Lab Partner(s) EXPERIMENT 7: ANGULAR KINEMATICS AND TORQUE (V_3) 121 Textbook Reference: Knight, Chapter 13.1-3, 6. SYNOPSIS In
More informationWork and Energy. W F s)
Work and Energy Experiment 18 Work is a measure of energy transfer. In the absence of friction, when positive work is done on an object, there will be an increase in its kinetic or potential energy. In
More informationPHYSICS 220 LAB #5: WORK AND ENERGY
Lab Section / 33 pts Name: Partners: PHYSICS 0 LAB #5: WORK AND ENERGY OBJECTIVES 1. To get practice calculating work.. To understand the concept of kinetic energy and its relationship to the net work
More informationPHYSICS 221 SPRING 2014
PHYSICS 221 SPRING 2014 EXAM 2: April 3, 2014 8:15-10:15pm Name (printed): Recitation Instructor: Section # INSTRUCTIONS: This exam contains 25 multiple-choice questions plus 2 extra credit questions,
More informationActivity P20: Conservation of Mechanical Energy (Force Sensor, Photogate)
Name Class Date Activity P20: Conservation of Mechanical Energy (Force Sensor, Photogate) Concept DataStudio ScienceWorkshop (Mac) ScienceWorkshop (Win) Energy P20 Mechanical Energy.DS P23 Cons. Mechanical
More informationBell Ringer: What is Newton s 3 rd Law? Which force acts downward? Which force acts upward when two bodies are in contact?
Bell Ringer: What is Newton s 3 rd Law? Which force acts downward? Which force acts upward when two bodies are in contact? Does the moon attract the Earth with the same force that the Earth attracts the
More informationAP Physics Free Response Practice Dynamics
AP Physics Free Response Practice Dynamics 14) In the system shown above, the block of mass M 1 is on a rough horizontal table. The string that attaches it to the block of mass M 2 passes over a frictionless
More informationVirbations and Waves
Virbations and Waves 1.1 Observe and find a pattern Try the following simple experiments and describe common patterns concerning the behavior of the block. (a) Fill in the table that follows. Experiment
More informationUNIT 4 NEWTON S THIRD LAW, FORCE DIAGRAMS AND FORCES. Objectives. To understand and be able to apply Newton s Third Law
UNIT 4 NEWTON S THIRD LAW, FORCE DIAGRAMS AND FORCES Objectives To understand and be able to apply Newton s Third Law To be able to determine the object that is exerting a particular force To understand
More informationFRICTION FORCE PHYSICS 2210: CLASSICAL PHYSICS I
FRICTION FORCE PHYSICS 2210: CLASSICAL PHYSICS I Name: Lab Date: Due Date: Lab Partner(s): Introduction It is a common observation that once set in motion objects invariably eventually come to rest. Friction
More informationPart I. Two Force-ometers : The Spring Scale and The Force Probe
Team Force and Motion In previous labs, you used a motion detector to measure the position, velocity, and acceleration of moving objects. You were not concerned about the mechanism that got the object
More informationDynamics. Newton s First Two Laws of Motion. A Core Learning Goals Activity for Science and Mathematics
CoreModels Dynamics Newton s First Two Laws of Motion A Core Learning Goals Activity for Science and Mathematics Summary: Students will investigate the first and second laws of motion in laboratory activities.
More informationLab 6 Forces Part 2. Physics 225 Lab
b Lab 6 Forces Part 2 Introduction This is the second part of the lab that you started last week. If you happen to have missed that lab then you should go back and read it first since this lab will assume
More informationLab 7. Newton s Third Law and Momentum
Lab 7. Newton s Third Law and Momentum Goals To explore the behavior of forces acting between two objects when they touch one another or interact with one another by some other means, such as a light string.
More informationForce and Motion. Thought Experiment
Team Force and Motion In previous labs, you used a motion sensor to measure the position, velocity, and acceleration of moving objects. You were not concerned about the mechanism that caused the object
More informationWork and Energy. computer masses (200 g and 500 g) If the force is constant and parallel to the object s path, work can be calculated using
Work and Energy OBJECTIVES Use a Motion Detector and a Force Sensor to measure the position and force on a hanging mass, a spring, and a dynamics cart. Determine the work done on an object using a force
More informationMASSACHUSETTS INSTITUTE OF TECHNOLOGY Physics Department. Physics 8.01 Fall Term 2006
MASSACHUSETTS INSTITUTE OF TECHNOLOGY Physics Department Physics 8.01 Fall Term 2006 Momentum Demonstration Purpose of the Experiment: In this experiment you allow two carts to collide on a level track
More informationApplying Newton s Laws
Applying Newton s Laws Free Body Diagrams Draw and label the forces acting on the object. Examples of forces: weight, normal force, air resistance, friction, applied forces (like a push or pull) Velocity
More informationMASSACHUSETTS INSTITUTE OF TECHNOLOGY Physics Department. Experiment 03: Work and Energy
MASSACHUSETTS INSTITUTE OF TECHNOLOGY Physics Department Physics 8.01 Fall Term 2010 Experiment 03: Work and Energy Purpose of the Experiment: In this experiment you allow a cart to roll down an inclined
More informationName Period. What force did your partner s exert on yours? Write your answer in the blank below:
Nae Period Lesson 7: Newton s Third Law and Passive Forces 7.1 Experient: Newton s 3 rd Law Forces of Interaction (a) Tea up with a partner to hook two spring scales together to perfor the next experient:
More informationWork and Energy. This sum can be determined graphically as the area under the plot of force vs. distance. 1
Work and Energy Experiment 18 Work is a measure of energy transfer. In the absence of friction, when positive work is done on an object, there will be an increase in its kinetic or potential energy. In
More informationHelp Desk: 9:00-5:00 Monday-Thursday, 9:00-noon Friday, in the lobby of MPHY.
Help Desk: 9:00-5:00 Monday-Thursday, 9:00-noon Friday, in the lobby of MPHY. SI (Supplemental Instructor): Thomas Leyden (thomasleyden@tamu.edu) 7:00-8:00pm, Sunday/Tuesday/Thursday, MPHY 333 Chapter
More informationLaboratory Exercise. Newton s Second Law
Laboratory Exercise Newton s Second Law INTRODUCTION Newton s first law was concerned with the property of objects that resists changes in motion, inertia. Balanced forces were the focus of Newton s first
More informationWhat is a Force? Free-Body diagrams. Contact vs. At-a-Distance 11/28/2016. Forces and Newton s Laws of Motion
Forces and Newton s Laws of Motion What is a Force? In generic terms: a force is a push or a pull exerted on an object that could cause one of the following to occur: A linear acceleration of the object
More informationForces & Newton s Laws FR Practice Problems
1) A drag-racing car speeds up from rest to 22 m/s in 2 s. The car has mass 800 kg; the driver has mass 80 kg. a) Calculate the acceleration of the car. b) Calculate the net force on the car. c) Which
More informationPhysics Exam 2 October 11, 2007
INSTRUCTIONS: Write your NAME on the front of the blue exam booklet. The exam is closed book, and you may have only pens/pencils and a calculator (no stored equations or programs and no graphing). Show
More informationTopic: Force PHYSICS 231
Topic: Force PHYSICS 231 Current Assignments Homework Set 2 due this Thursday, Jan 27, 11 pm Reading for next week: Chapters 10.1-6,10.10,8.3 2/1/11 Physics 231 Spring 2011 2 Key Concepts: Force Free body
More informationForce a push or a pull exerted on some object the cause of an acceleration, or the change in an objects velocity
Chapter 4 Physics Notes Changes in Motion Force a push or a pull exerted on some object the cause of an acceleration, or the change in an objects velocity Forces cause changes in velocity Causes a stationary
More informationChapter Introduction. Motion. Motion. Chapter Wrap-Up
Chapter Introduction Lesson 1 Lesson 2 Lesson 3 Describing Motion Graphing Motion Forces Chapter Wrap-Up What is the relationship between motion and forces? What do you think? Before you begin, decide
More informationRepresentations of Motion in One Dimension: Speeding up and slowing down with constant acceleration
Representations of Motion in One Dimension: Speeding up and slowing down with constant acceleration Name: Group Members: Date: TA s Name: Apparatus: Aluminum track and supports, PASCO Smart Cart, two cart
More informationLAB: FORCE AND MOTION
LAB: FORCE AND MOTION Introduction In this lab we will apply a force to a cart and look at the motion that results. Therefore, we are asking the question: "How does the motion depend on the force?" More
More informationPhysics 6A Lab Experiment 6
Biceps Muscle Model Physics 6A Lab Experiment 6 APPARATUS Biceps model Large mass hanger with four 1-kg masses Small mass hanger for hand end of forearm bar with five 100-g masses Meter stick Centimeter
More informationGeneral Physics I Spring Forces and Newton s Laws of Motion
General Physics I Spring 2011 Forces and Newton s Laws of Motion 1 Forces and Interactions The central concept in understanding why things move is force. If a tractor pushes or pulls a trailer, the tractor
More informationUNIT 5 SESSION 3: FORCE, MASS AND ACCELERATION
Name Date Partners UNIT 5 SESSION 3: FORCE, MASS AND ACCELERATION... equal forces shall effect an equal change in equal bodies... I. Newton OBJECTIVES To develop a definition of mass in terms of an object
More informationAn Introduction to Forces Forces-part 1. Forces are Interactions
An Introduction to Forces Forces-part 1 PHYS& 114: Eyres Forces are Interactions A force is an interaction between 2 objects Touching At a distance See the Fundamental Particle Chart (http://www.cpepphysics.org/images/2014-fund-chart.jpg)
More informationIntroduction. Pre-Lab Questions: Physics 1CL PERIODIC MOTION - PART II Spring 2009
Introduction This is the second of two labs on simple harmonic motion (SHM). In the first lab you studied elastic forces and elastic energy, and you measured the net force on a pendulum bob held at an
More informationDynamics: Forces and Newton s Laws of Motion
Lecture 7 Chapter 5 Dynamics: Forces and Newton s Laws of Motion Course website: http://faculty.uml.edu/andriy_danylov/teaching/physicsi Today we are going to discuss: Chapter 5: Force, Mass: Section 5.1
More informationLab: Vectors. You are required to finish this section before coming to the lab. It will be checked by one of the lab instructors when the lab begins.
Lab: Vectors Lab Section (circle): Day: Monday Tuesday Time: 8:00 9:30 1:10 2:40 Name Partners Pre-Lab You are required to finish this section before coming to the lab. It will be checked by one of the
More information2007 Academic Challenge
2007 Academic Challenge PHYSICS TEST - REGIONAL This Test Consists of 35 Questions Physics Test Production Team Len Storm, Eastern Illinois University Author/Team Coordinator Doug Brandt, Eastern Illinois
More information3/10/2019. What Is a Force? What Is a Force? Tactics: Drawing Force Vectors
What Is a Force? A force acts on an object. A force requires an agent, something that acts on the object. If you throw a ball, your hand is the agent or cause of the force exerted on the ball. A force
More informationPHYSICS 221 SPRING 2013
PHYSICS 221 SPRING 2013 EXAM 2: April 4, 2013 8:15-10:15pm Name (printed): Recitation Instructor: Section # INSTRUCTIONS: This exam contains 25 multiple-choice questions plus 2 extra credit questions,
More informationChapter 5: Forces in Equilibrium
Chapter 5: Forces in Equilibrium I don't know what I may seem to the world, but, as to myself, I seem to have been only like a boy playing on the sea shore, and diverting myself in now and then finding
More informationLab #2: Newton s Second Law
Physics 144 Chowdary How Things Work Spring 2006 Name: Partners Name(s): Lab #2: Newton s Second Law Introduction In today s exploration, we will investigate the consequences of what is one of the single
More informationChapter Introduction. Motion. Motion. Chapter Wrap-Up
Chapter Introduction Lesson 1 Lesson 2 Lesson 3 Describing Motion Graphing Motion Forces Chapter Wrap-Up What is the relationship between motion and forces? What do you think? Before you begin, decide
More informationEnd-of-Chapter Exercises
End-of-Chapter Exercises Exercises 1 12 are conceptual questions that are designed to see if you have understood the main concepts of the chapter. 1. When a spring is compressed 10 cm, compared to its
More informationTo study applications of Newton s Laws as they. To study conditions that establish equilibrium. To consider contact forces and the effects of
Chap. 5: More Examples with Newton s Law Chap.5: Applying Newton s Laws To study conditions that establish equilibrium. To study applications of Newton s Laws as they apply when the net force is not zero.
More informationLAB 05B: Friction 2 times PURPOSE BACKGROUND MATERIALS PRELIMINARY QUESTIONS: (TO DO BEFORE THE LAB!!) Lab 05B: Friction 1/5 Mr.
LAB 05B: Friction 2 times PURPOSE To investigate how friction is related to other variable such as the normal force, weight, and surface coefficients. In this experiment we will determine the static and
More informationWhat Is a Force? Slide Pearson Education, Inc.
What Is a Force? A force acts on an object. A force requires an agent, something that acts on the object. If you throw a ball, your hand is the agent or cause of the force exerted on the ball. A force
More informationAP PHYSICS 1 UNIT 4 / FINAL 1 PRACTICE TEST
AP PHYSICS 1 UNIT 4 / FINAL 1 PRACTICE TEST NAME FREE RESPONSE PROBLEMS Put all answers on this test. Show your work for partial credit. Circle or box your answers. Include the correct units and the correct
More informationChapter 5 Newton s Laws of Motion. Copyright 2010 Pearson Education, Inc.
Chapter 5 Newton s Laws of Motion Force and Mass Units of Chapter 5 Newton s First Law of Motion Newton s Second Law of Motion Newton s Third Law of Motion The Vector Nature of Forces: Forces in Two Dimensions
More informationIntroduction to Simple Harmonic Motion
Introduction to Prelab Prelab 1: Write the objective of your experiment. Prelab 2: Write the relevant theory of this experiment. Prelab 3: List your apparatus and sketch your setup.! Have these ready to
More informationPHY 221 Lab 2. Acceleration and Uniform Motion
PHY 221 Lab 2 Name: Partner: Partner: Acceleration and Uniform Motion Introduction: Recall the previous lab During Lab 1, you were introduced to computer aided data acquisition. You used a device called
More informationFirst Midterm Exam. Physics General Physics Lecture 11 Work and Energy 9/28/2016. Fall 2016 Semester Prof. Matthew Jones
Physics 22000 General Physics Lecture 11 Work and Energy Fall 2016 Semester Prof. Matthew Jones 1 First Midterm Exam Tuesday, October 4 th, 8:00-9:30 pm Location: PHYS 112 and WTHR 200. Covering material
More informationPhysics 2211 ABC Quiz #3 Solutions Spring 2017
Physics 2211 ABC Quiz #3 Solutions Spring 2017 I. (16 points) A block of mass m b is suspended vertically on a ideal cord that then passes through a frictionless hole and is attached to a sphere of mass
More informationElectrostatics: Coulomb's Law
Electrostatics: Coulomb's Law Objective: To learn how excess charge is created and transferred. To measure the electrostatic force between two objects as a function of their electrical charges and their
More informationNewton s Laws. A force is simply a push or a pull. Forces are vectors; they have both size and direction.
Newton s Laws Newton s first law: An object will stay at rest or in a state of uniform motion with constant velocity, in a straight line, unless acted upon by an external force. In other words, the bodies
More informationWelcome back to Physics 211
Welcome back to Physics 211 Today s agenda: Weight Friction Tension 07-1 1 Current assignments Thursday prelecture assignment. HW#7 due this Friday at 5 pm. 07-1 2 Summary To solve problems in mechanics,
More informationAcceleration and Force: I
Lab Section (circle): Day: Monday Tuesday Time: 8:00 9:30 1:10 2:40 Acceleration and Force: I Name Partners Pre-Lab You are required to finish this section before coming to the lab, which will be checked
More informationForce Vectors and Static Equilibrium
Force Vectors 1 Force Vectors and Static Equilibrium Overview: In this experiment you will hang weights from pulleys over the edge of a small round force table, to exert various forces on a metal ring
More informationCoefficient of Friction Lab
Name Date Period Coefficient of Friction Lab The purpose of this lab is to determine the relationship between a) the force of static friction and the normal force and b) the force of kinetic friction and
More informationQ2. A book whose mass is 2 kg rests on a table. Find the magnitude of the force exerted by the table on the book.
AP Physics 1- Dynamics Practice Problems FACT: Inertia is the tendency of an object to resist a change in state of motion. A change in state of motion means a change in an object s velocity, therefore
More informationPhysics Mechanics. Lecture 11 Newton s Laws - part 2
Physics 170 - Mechanics Lecture 11 Newton s Laws - part 2 Newton s Second Law of Motion An object may have several forces acting on it; the acceleration is due to the net force: Newton s Second Law of
More informationChapter 4 Force and Motion
Chapter 4 Force and Motion Units of Chapter 4 The Concepts of Force and Net Force Inertia and Newton s First Law of Motion Newton s Second Law of Motion Newton s Third Law of Motion More on Newton s Laws:
More informationNewton s 3 Laws of Motion
Newton s 3 Laws of Motion 1. If F = 0 No change in motion 2. = ma Change in motion Fnet 3. F = F 1 on 2 2 on 1 Newton s First Law (Law of Inertia) An object will remain at rest or in a constant state of
More information