# 3. A bicycle tire of radius 0.33 m and a mass 1.5 kg is rotating at 98.7 rad/s. What torque is necessary to stop the tire in 2.0 s?

Save this PDF as:

Size: px
Start display at page:

Download "3. A bicycle tire of radius 0.33 m and a mass 1.5 kg is rotating at 98.7 rad/s. What torque is necessary to stop the tire in 2.0 s?"

## Transcription

1 Practice 8A Torque 1. Find the torque produced by a 3.0 N force applied at an angle of 60.0 to a door 0.25 m from the hinge. What is the maximum torque this force could exert? 2. If the torque required to loosen a nut on the wheel of a car has a magnitude of 40.0 N m, what minimum force must be exerted by a mechanic at the end of a 30.0 cm wrench to loosen the nut? 3. A simple pendulum consists of a 3.0 kg point mass hanging at the end of a 2.0 m long light string that is connected to a pivot point. a. Calculate the magnitude of the torque (due to the force of gravity) around this pivot point when the string makes a 5.0 angle with the vertical. b. Repeat this calculation for an angle of Practice 8B Rotational Equilibrium 1. A 5.00 m long horizontal beam weighing 315 N is attached to a wall by a pin connection that allows the beam to rotate. Its far end is supported by a cable that makes an angle of 53.0 with the horizontal, and a 545 N person is standing 1.50 m from the wall. a. Find the force in the cable, F T, and the force exerted on the beam by the wall, R, if the beam is in equilibrium.

2 b. Repeat the above with the axis of rotation passing through the center of mass of the beam. 2. A N child and a N child sit on either end of a 2.0 m long seesaw. a. Where along the seesaw should the pivot be placed to ensure rotational equilibrium?

3 b. Suppose a 225 N child sits m from the N child. Where must a 325 N child sit to maintain rotational equilibrium? 3. A bridge 20.0 m long and weighing N is supported by two pillars located 3.00 m from each end. If a N car is parked 8.00 m from one end of the bridge, how much force does each pillar exert? 4. A N window washer is standing on a scaffold supported by a vertical rope at each end. The scaffold weighs N and is 3.00 m long. What is the force in each rope when the window washer stands 1.00 m from one end?

4 Practice 8C Newton s Second Law for Rotating Objects 1. A potter s wheel of radius 0.50 m and mass kg is freely rotating at 50.0 rev/min. The potter can stop the wheel in 6.0 s by pressing a wet rag against the rim and exerting a radially inward force of 70.0 N a. What is the angular acceleration of the wheel? b. How much torque does the potter apply to the wheel? 2. A light string 4.00 m long is wrapped around a solid cylindrical spool with a radius of m and a mass of kg. A 5.00 kg mass is then attached to the free end of the string, causing the string to unwind from the spool. a. What is the angular acceleration of the spool? b. How fast will the spool be rotating after all of the string has unwound? 3. A bicycle tire of radius 0.33 m and a mass 1.5 kg is rotating at 98.7 rad/s. What torque is necessary to stop the tire in 2.0 s?

5 Practice 8D Conservation of Angular Momentum 1. A merry-go-round rotates at the rate of 0.20 rev/s with an 80.0 kg man standing at a point 2.0 m from the axis of rotation. What is the new angular speed when the man walks to a point 1.0 m from the center? Assume that the merry-go-round is a solid 25 kg cylinder with a radius of 2.0 m. 2. A 2.0 kg bicycle wheel with a radius of 0.30 m turns at a constant angular speed of 25 rad/s when a 0.30 kg reflector is at a distance of 0.15 m from the axle. What is the angular speed of the wheel when the reflector slides to a distance of 0.25 m from the axle? 3. As Halley s Comet orbits the sun, its distance from the sun changes dramatically, from m to m. If the comet s speed at closest approach is m/s, what is its speed when it is farthest from the sun if angular momentum is conserved? 4. A solid, horizontal cylinder with a mass of 10.0 kg and a radius of 1.00 m rotates with an angular speed of 7.00 rad/s about a fixed vertical axis through its center. A kg piece of putty is dropped vertically at a point m from the cylinder s center of rotation and sticks to the cylinder. Determine the final angular speed of the system.

6 5. The entrance of a science museum features a funnel into which marbles are rolled one at a time. The marbles circle around the wall of the funnel, eventually spiraling down into the neck of the funnel. The internal radius of the funnel at the top is 1.50 m. At the bottom, the funnel s neck narrows to an internal radius of m. A kg marble begins rolling a large circular orbit around the funnel s rim at 0.65 rev/s. If it continues moving in a roughly circular path, what will the marble s angular speed be as it passes through the neck of the funnel? Consider only the effects of the conservation of angular momentum. Practice 8E Conservation of Mechanical Energy 1. A solid ball with a mass of 3.25 kg and a radius of 0.75 m starts from rest at a height of 2.00 m and rolls down a 30.0 slope. a. What is the translational speed of the ball when it leaves the incline? b. If the ball above is replaced with a solid cylinder of the same mass and radius, and is released from the same height, what will its translational speed at the base of the incline?

7 2. A regulation basketball has a 25 cm diameter and may be approximated as a thin spherical shell. How long will it take a basketball starting from rest to roll without slipping 4.0 m down an incline that makes an angle of 30.0 with the horizontal? 3. A horizontal N merry-go-round with a radius of 1.5 m is started from rest by a constant horizontal force of 50.0 N applied tangentially to the merry-go-round. Find the kinetic energy of the merry-go-round after 3.0 s. Assume the merry-go-round is a solid disk. Practice 8F Simple Machines 1. The efficiency of a squeaky pulley system is 73%. The pulleys are used to raise a mass. What force is exerted on the machine if a rope is pulled 18.0 m in order to raise a 58 kg mass a height of 3.0 m? 2. A person pushes a 950 N box up an incline. If the person exerts a force of 350 N along the incline, what is the mechanical advantage of the incline?

8 3. A person must move a large stone in her backyard. She gets a 20.0 kg plank that is 3.50 m long to use as a lever, and she wedges one end of the plank under the large stone. A smaller stone, m from the large one, serves as a pivot. The plank makes an angle of 20.0 with the ground. When she pushes down on one end of the plank with a force of 210 N, the large stone begins to move. a. What upward force is being exerted against the large stone? b. What is the mechanical advantage of the lever?

### Use the following to answer question 1:

Use the following to answer question 1: On an amusement park ride, passengers are seated in a horizontal circle of radius 7.5 m. The seats begin from rest and are uniformly accelerated for 21 seconds to

### Physics 23 Exam 3 April 2, 2009

1. A string is tied to a doorknob 0.79 m from the hinge as shown in the figure. At the instant shown, the force applied to the string is 5.0 N. What is the torque on the door? A) 3.3 N m B) 2.2 N m C)

### Description: Using conservation of energy, find the final velocity of a "yo yo" as it unwinds under the influence of gravity.

Chapter 10 [ Edit ] Overview Summary View Diagnostics View Print View with Answers Chapter 10 Due: 11:59pm on Sunday, November 6, 2016 To understand how points are awarded, read the Grading Policy for

### Phys 106 Practice Problems Common Quiz 1 Spring 2003

Phys 106 Practice Problems Common Quiz 1 Spring 2003 1. For a wheel spinning with constant angular acceleration on an axis through its center, the ratio of the speed of a point on the rim to the speed

### Practice Problems from Chapters 11-13, for Midterm 2. Physics 11a Fall 2010

Practice Problems from Chapters 11-13, for Midterm 2. Physics 11a Fall 2010 Chapter 11 1. The Ferris wheel shown below is turning at constant speed. Draw and label free-body diagrams showing the forces

### Angular Speed and Angular Acceleration Relations between Angular and Linear Quantities

Angular Speed and Angular Acceleration Relations between Angular and Linear Quantities 1. The tires on a new compact car have a diameter of 2.0 ft and are warranted for 60 000 miles. (a) Determine the

### TutorBreeze.com 7. ROTATIONAL MOTION. 3. If the angular velocity of a spinning body points out of the page, then describe how is the body spinning?

1. rpm is about rad/s. 7. ROTATIONAL MOTION 2. A wheel rotates with constant angular acceleration of π rad/s 2. During the time interval from t 1 to t 2, its angular displacement is π rad. At time t 2

### 4) Vector = and vector = What is vector = +? A) B) C) D) E)

1) Suppose that an object is moving with constant nonzero acceleration. Which of the following is an accurate statement concerning its motion? A) In equal times its speed changes by equal amounts. B) In

### Fall 2007 RED Barcode Here Physics 105, sections 1 and 2 Please write your CID Colton

Fall 007 RED Barcode Here Physics 105, sections 1 and Exam 3 Please write your CID Colton -3669 3 hour time limit. One 3 5 handwritten note card permitted (both sides). Calculators permitted. No books.

### Summer Physics 41 Pretest. Shorty Shorts (2 pts ea): Circle the best answer. Show work if a calculation is required.

Summer Physics 41 Pretest Name: Shorty Shorts (2 pts ea): Circle the best answer. Show work if a calculation is required. 1. An object hangs in equilibrium suspended by two identical ropes. Which rope

### Physics 53 Exam 3 November 3, 2010 Dr. Alward

1. When the speed of a rear-drive car (a car that's driven forward by the rear wheels alone) is increasing on a horizontal road the direction of the frictional force on the tires is: A) forward for all

### Concept Question: Normal Force

Concept Question: Normal Force Consider a person standing in an elevator that is accelerating upward. The upward normal force N exerted by the elevator floor on the person is 1. larger than 2. identical

### A uniform rod of length L and Mass M is attached at one end to a frictionless pivot. If the rod is released from rest from the horizontal position,

A dentist s drill starts from rest. After 3.20 s of constant angular acceleration, it turns at a rate of 2.51 10 4 rev/min. (a) Find the drill s angular acceleration. (b) Determine the angle (in radians)

### AP Physics Multiple Choice Practice Torque

AP Physics Multiple Choice Practice Torque 1. A uniform meterstick of mass 0.20 kg is pivoted at the 40 cm mark. Where should one hang a mass of 0.50 kg to balance the stick? (A) 16 cm (B) 36 cm (C) 44

### Advanced Higher Physics. Rotational motion

Wallace Hall Academy Physics Department Advanced Higher Physics Rotational motion Problems AH Physics: Rotational Motion 1 2013 Data Common Physical Quantities QUANTITY SYMBOL VALUE Gravitational acceleration

1 About what axis is the rotational inertia of your body the least? Vertical Axis 5 The figure shows three small spheres that rotate about a vertical axis. The perpendicular distance between the axis and

### HATZIC SECONDARY SCHOOL

HATZIC SECONDARY SCHOOL PROVINCIAL EXAMINATION ASSIGNMENT CIRCULAR MOTION MULTIPLE CHOICE / 30 OPEN ENDED / 65 TOTAL / 95 NAME: 1. An object travels along a path at constant speed. There is a constant

### = o + t = ot + ½ t 2 = o + 2

Chapters 8-9 Rotational Kinematics and Dynamics Rotational motion Rotational motion refers to the motion of an object or system that spins about an axis. The axis of rotation is the line about which the

### PHYS 1303 Final Exam Example Questions

PHYS 1303 Final Exam Example Questions (In summer 2014 we have not covered questions 30-35,40,41) 1.Which quantity can be converted from the English system to the metric system by the conversion factor

### Physics 130: Questions to study for midterm #1 from Chapter 8

Physics 130: Questions to study for midterm #1 from Chapter 8 1. If the beaters on a mixer make 800 revolutions in 5 minutes, what is the average rotational speed of the beaters? a. 2.67 rev/min b. 16.8

### Chapter 8. Rotational Motion

Chapter 8 Rotational Motion Rotational Work and Energy W = Fs = s = rθ Frθ Consider the work done in rotating a wheel with a tangential force, F, by an angle θ. τ = Fr W =τθ Rotational Work and Energy

### Hint 1. The direction of acceleration can be determined from Newton's second law

Chapter 5 [ Edit ] Overview Summary View Diagnostics View Print View with Answers Chapter 5 Due: 11:59pm on Sunday, October 2, 2016 To understand how points are awarded, read the Grading Policy for this

### Part 1 of 1. (useful for homework)

Chapter 9 Part 1 of 1 Example Problems & Solutions Example Problems & Solutions (useful for homework) 1 1. You are installing a spark plug in your car, and the manual specifies that it be tightened to

### Exercise Torque Magnitude Ranking Task. Part A

Exercise 10.2 Calculate the net torque about point O for the two forces applied as in the figure. The rod and both forces are in the plane of the page. Take positive torques to be counterclockwise. τ 28.0

### Dynamics of Rotational Motion: Rotational Inertia

Connexions module: m42179 1 Dynamics of Rotational Motion: Rotational Inertia OpenStax College This work is produced by The Connexions Project and licensed under the Creative Commons Attribution License

### PHY218 SPRING 2016 Review for Final Exam: Week 14 Final Review: Chapters 1-11, 13-14

Final Review: Chapters 1-11, 13-14 These are selected problems that you are to solve independently or in a team of 2-3 in order to better prepare for your Final Exam 1 Problem 1: Chasing a motorist This

### [1.] This problem has five multiple choice questions. Circle the best answer in each case.

[1.] This problem has five multiple choice questions. Circle the best answer in each case. [1A.] A force given by 1 2 3, acts on a particle positioned at 2 6. What is its torque about the origin? [a] 18

### CHAPTER 10 ROTATION OF A RIGID OBJECT ABOUT A FIXED AXIS WEN-BIN JIAN ( 簡紋濱 ) DEPARTMENT OF ELECTROPHYSICS NATIONAL CHIAO TUNG UNIVERSITY

CHAPTER 10 ROTATION OF A RIGID OBJECT ABOUT A FIXED AXIS WEN-BIN JIAN ( 簡紋濱 ) DEPARTMENT OF ELECTROPHYSICS NATIONAL CHIAO TUNG UNIVERSITY OUTLINE 1. Angular Position, Velocity, and Acceleration 2. Rotational

### 66 Chapter 6: FORCE AND MOTION II

Chapter 6: FORCE AND MOTION II 1 A brick slides on a horizontal surface Which of the following will increase the magnitude of the frictional force on it? A Putting a second brick on top B Decreasing the

### 1301W.600 Lecture 16. November 6, 2017

1301W.600 Lecture 16 November 6, 2017 You are Cordially Invited to the Physics Open House Friday, November 17 th, 2017 4:30-8:00 PM Tate Hall, Room B20 Time to apply for a major? Consider Physics!! Program

### FALL TERM EXAM, PHYS 1211, INTRODUCTORY PHYSICS I Saturday, 14 December 2013, 1PM to 4 PM, AT 1003

FALL TERM EXAM, PHYS 1211, INTRODUCTORY PHYSICS I Saturday, 14 December 2013, 1PM to 4 PM, AT 1003 NAME: STUDENT ID: INSTRUCTION 1. This exam booklet has 14 pages. Make sure none are missing 2. There is

### AP Physics C: Rotation II. (Torque and Rotational Dynamics, Rolling Motion) Problems

AP Physics C: Rotation II (Torque and Rotational Dynamics, Rolling Motion) Problems 1980M3. A billiard ball has mass M, radius R, and moment of inertia about the center of mass I c = 2 MR²/5 The ball is

### Chapter 10. Rotation

Chapter 10 Rotation Rotation Rotational Kinematics: Angular velocity and Angular Acceleration Rotational Kinetic Energy Moment of Inertia Newton s nd Law for Rotation Applications MFMcGraw-PHY 45 Chap_10Ha-Rotation-Revised

### Chapter 11. Today. Last Wednesday. Precession from Pre- lecture. Solving problems with torque

Chapter 11 Last Wednesday Solving problems with torque Work and power with torque Angular momentum Conserva5on of angular momentum Today Precession from Pre- lecture Study the condi5ons for equilibrium

### Practice 2nd test 123

Practice 2nd test 123 Multiple Choice Identify the choice that best completes the statement or answers the question. 1. Rupel pushes a box 5.00 m by applying a 25.0-N horizontal force. What work does she

### Rotational Kinetic Energy

Lecture 17, Chapter 10: Rotational Energy and Angular Momentum 1 Rotational Kinetic Energy Consider a rigid body rotating with an angular velocity ω about an axis. Clearly every point in the rigid body

### Version A (01) Question. Points

Question Version A (01) Version B (02) 1 a a 3 2 a a 3 3 b a 3 4 a a 3 5 b b 3 6 b b 3 7 b b 3 8 a b 3 9 a a 3 10 b b 3 11 b b 8 12 e e 8 13 a a 4 14 c c 8 15 c c 8 16 a a 4 17 d d 8 18 d d 8 19 a a 4

### PS 11 GeneralPhysics I for the Life Sciences

PS 11 GeneralPhysics I for the Life Sciences ROTATIONAL MOTION D R. B E N J A M I N C H A N A S S O C I A T E P R O F E S S O R P H Y S I C S D E P A R T M E N T F E B R U A R Y 0 1 4 Questions and Problems

### Exam 3 Practice Solutions

Exam 3 Practice Solutions Multiple Choice 1. A thin hoop, a solid disk, and a solid sphere, each with the same mass and radius, are at rest at the top of an inclined plane. If all three are released at

### 2008 FXA THREE FORCES IN EQUILIBRIUM 1. Candidates should be able to : TRIANGLE OF FORCES RULE

THREE ORCES IN EQUILIBRIUM 1 Candidates should be able to : TRIANGLE O ORCES RULE Draw and use a triangle of forces to represent the equilibrium of three forces acting at a point in an object. State that

### 4.0 m s 2. 2 A submarine descends vertically at constant velocity. The three forces acting on the submarine are viscous drag, upthrust and weight.

1 1 wooden block of mass 0.60 kg is on a rough horizontal surface. force of 12 N is applied to the block and it accelerates at 4.0 m s 2. wooden block 4.0 m s 2 12 N hat is the magnitude of the frictional

### Chapter 10 Practice Test

Chapter 10 Practice Test 1. At t = 0, a wheel rotating about a fixed axis at a constant angular acceleration of 0.40 rad/s 2 has an angular velocity of 1.5 rad/s and an angular position of 2.3 rad. What

### 11-2 A General Method, and Rolling without Slipping

11-2 A General Method, and Rolling without Slipping Let s begin by summarizing a general method for analyzing situations involving Newton s Second Law for Rotation, such as the situation in Exploration

### Physics 131: Lecture 21. Today s Agenda

Physics 131: Lecture 21 Today s Agenda Rotational dynamics Torque = I Angular Momentum Physics 201: Lecture 10, Pg 1 Newton s second law in rotation land Sum of the torques will equal the moment of inertia

### Physics 131: Lecture 21. Today s Agenda

Physics 131: Lecture 1 Today s Agenda Rotational dynamics Torque = I Angular Momentum Physics 01: Lecture 10, Pg 1 Newton s second law in rotation land Sum of the torques will equal the moment of inertia

### Get Solution of These Packages & Learn by Video Tutorials on EXERCISE-1 (C) (C) ml2

EXERCISE-1 1. A thin rod of length 4 l, mass 4m is bent at the points as shown in the fig. What is the moment of inertia of the rod about the axis passing point O & perpendicular to the plane of the paper.

### Solution Only gravity is doing work. Since gravity is a conservative force mechanical energy is conserved:

8) roller coaster starts with a speed of 8.0 m/s at a point 45 m above the bottom of a dip (see figure). Neglecting friction, what will be the speed of the roller coaster at the top of the next slope,

### Exam. Name. MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

Exam Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) You want to swim straight across a river that is 76 m wide. You find that you can do

### Slide 1 / 37. Rotational Motion

Slide 1 / 37 Rotational Motion Slide 2 / 37 Angular Quantities An angle θ can be given by: where r is the radius and l is the arc length. This gives θ in radians. There are 360 in a circle or 2π radians.

### Upthrust and Archimedes Principle

1 Upthrust and Archimedes Principle Objects immersed in fluids, experience a force which tends to push them towards the surface of the liquid. This force is called upthrust and it depends on the density

### Chapter 6, Problem 18. Agenda. Rotational Inertia. Rotational Inertia. Calculating Moment of Inertia. Example: Hoop vs.

Agenda Today: Homework quiz, moment of inertia and torque Thursday: Statics problems revisited, rolling motion Reading: Start Chapter 8 in the reading Have to cancel office hours today: will have extra

### Centripetal force keeps an object in circular motion Rotation and Revolution

Centripetal force keeps an object in circular motion. 10.1 Rotation and Revolution Two types of circular motion are and. An is the straight line around which rotation takes place. When an object turns

### Work and kinetic Energy

Work and kinetic Energy Problem 66. M=4.5kg r = 0.05m I = 0.003kgm 2 Q: What is the velocity of mass m after it dropped a distance h? (No friction) h m=0.6kg mg Work and kinetic Energy Problem 66. M=4.5kg

### Chapter 7 Rotational Motion 7.1 Angular Quantities Homework # 51

7.1 Angular Quantities Homework # 51 01. Convert the following angle measurements to radians. a.) 30.0 b.) 45.0 c.) 90.0 02. The Empire State Building has a total height of 443.2 m (including the lightning

### PHYS 101 Previous Exam Problems. Force & Motion I

PHYS 101 Previous Exam Problems CHAPTER 5 Force & Motion I Newton s Laws Vertical motion Horizontal motion Mixed forces Contact forces Inclines General problems 1. A 5.0-kg block is lowered with a downward

### Equilibrium. For an object to remain in equilibrium, two conditions must be met. The object must have no net force: and no net torque:

Equilibrium For an object to remain in equilibrium, two conditions must be met. The object must have no net force: F v = 0 and no net torque: v τ = 0 Worksheet A uniform rod with a length L and a mass

### Bumper Cars. Question

Bumper Cars 1 You are riding on the edge of a spinning playground merry-goround. If you pull yourself to the center of the merry-go-round, what will happen to its rotation? A. It will spin faster. B. It

### Circular Velocity and Centripetal Acceleration

1. An object is spun around in circular motion such that it completes 100 cycles in 25 s. a. What is the period of its rotation? [0.25 s] b. If the radius is 0.3 m what is the velocity? [7.54 m/s] c. Draw

### University Physics (Prof. David Flory) Chapt_06 Saturday, October 06, 2007 Page 1

University Physics (Prof. David Flory) Chapt_06 Saturday, October 06, 2007 Page 1 Name: Date: 1. A crate resting on a rough horizontal floor is to be moved horizontally. The coefficient of static friction

### Chapter 15 Work, Power & Simple Machines

Chapter 15 Work, Power & Simple Machines Essential Questions: I. What is Work? (In Physics Terms!) II. What is Power? (In Physics Terms!) III. How do machines make work easier and how efficient are they?

### Today. Ch. 8 on Rotation. Note, all lectures and pre-lectures posted up as always at

Ch. 8 on Rotation Today Note, all lectures and pre-lectures posted up as always at http://www.hunter.cuny.edu/physics/courses/physics100/spring-2016 Looking ahead: Sep 27, Review (Chs 2,3,4,5,6,7,8) Sep

### s_3x03 Page 1 Physics Samples

Physics Samples KE, PE, Springs 1. A 1.0-kilogram rubber ball traveling east at 4.0 meters per second hits a wall and bounces back toward the west at 2.0 meters per second. Compared to the kinetic energy

### Practice Test 3. Name: Date: ID: A. Multiple Choice Identify the choice that best completes the statement or answers the question.

Name: Date: _ Practice Test 3 Multiple Choice Identify the choice that best completes the statement or answers the question. 1. A wheel rotates about a fixed axis with an initial angular velocity of 20

### Equilibrium & Elasticity

PHYS 101 Previous Exam Problems CHAPTER 12 Equilibrium & Elasticity Static equilibrium Elasticity 1. A uniform steel bar of length 3.0 m and weight 20 N rests on two supports (A and B) at its ends. A block

### MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

Exam Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) You are standing in a moving bus, facing forward, and you suddenly fall forward as the

### P211 Spring 2004 Form A

1. A 2 kg block A traveling with a speed of 5 m/s as shown collides with a stationary 4 kg block B. After the collision, A is observed to travel at right angles with respect to the initial direction with

### General Physics (PHY 2130)

General Physics (PHY 130) Lecture 0 Rotational dynamics equilibrium nd Newton s Law for rotational motion rolling Exam II review http://www.physics.wayne.edu/~apetrov/phy130/ Lightning Review Last lecture:

### MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

Exam Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) A 4.8-kg block attached to a spring executes simple harmonic motion on a frictionless

### AP Physics C: Mechanics Practice (Newton s Laws including friction, resistive forces, and centripetal force).

AP Physics C: Mechanics Practice (Newton s Laws including friction, resistive forces, and centripetal force). 1981M1. A block of mass m, acted on by a force of magnitude F directed horizontally to the

### Circular Motion. Conceptual Physics 11 th Edition. Circular Motion Tangential Speed

Conceptual Physics 11 th Edition Circular Motion Rotational Inertia Torque Center of Mass and Center of Gravity Centripetal Force Centrifugal Force Chapter 8: ROTATION Rotating Reference Frames Simulated

### UNIVERSITY OF MANITOBA. All questions are of equal value. No marks are subtracted for wrong answers.

(3:30 pm 6:30 pm) PAGE NO.: 1 of 7 All questions are of equal value. No marks are subtracted for wrong answers. Record all answers on the computer score sheet provided. USE PENCIL ONLY! Black pen will

### 1. What three dimensions are used to derive most measurements in physics?

Physics Semester 1 Exam Review Unit 1: Measurement What is the SI unit for length, mass, and time? When are zeros significant figures? When are zeros not significant figures? When are calculations rounded-off

### Lecture PowerPoints. Chapter 10 Physics for Scientists and Engineers, with Modern Physics, 4 th edition Giancoli

Lecture PowerPoints Chapter 10 Physics for Scientists and Engineers, with Modern Physics, 4 th edition Giancoli 2009 Pearson Education, Inc. This work is protected by United States copyright laws and is

### WORK & ENERGY. Work W = Fdcosα 1. A force of 25.0 Newtons is applied so as to move a 5.0 kg mass a distance of 20.0 meters. How much work was done?

PHYSICS HOMEWORK #41 Work W = Fdcosα 1. A force of 25.0 Newtons is applied so as to move a 5.0 kg mass a distance of 20.0 meters. How much work was done? 2. A force of 120 N is applied to the front of

### ConcepTest PowerPoints

ConcepTest PowerPoints Chapter 8 Physics: Principles with Applications, 6 th edition Giancoli 2005 Pearson Prentice Hall This work is protected by United States copyright laws and is provided solely for

### Name Student ID Score Last First. I = 2mR 2 /5 around the sphere s center of mass?

NOTE: ignore air resistance in all Questions. In all Questions choose the answer that is the closest!! Question I. (15 pts) Rotation 1. (5 pts) A bowling ball that has an 11 cm radius and a 7.2 kg mass

### Study Guide Final Exam Solutions. Part A: Kinetic Theory, First Law of Thermodynamics, Heat Engines

Massachusetts Institute of Technology Department of Physics 8.0T Fall 004 Study Guide Final Exam Solutions Part A: Kinetic Theory, First Law of Thermodynamics, Heat Engines Problem Energy Transformation,

### Physics 2210 Homework 18 Spring 2015

Physics 2210 Homework 18 Spring 2015 Charles Jui April 12, 2015 IE Sphere Incline Wording A solid sphere of uniform density starts from rest and rolls without slipping down an inclined plane with angle

### Quiz Number 4 PHYSICS April 17, 2009

Instructions Write your name, student ID and name of your TA instructor clearly on all sheets and fill your name and student ID on the bubble sheet. Solve all multiple choice questions. No penalty is given

### On my honor, I have neither given nor received unauthorized aid on this examination.

Instructor(s): N. Sullivan PHYSICS DEPARTMENT PHY 2004 Final Exam December 13, 2010 Name (print, last first): Signature: On my honor, I have neither given nor received unauthorized aid on this examination.

### Midterm 3 Thursday April 13th

Welcome back to Physics 215 Today s agenda: Angular momentum Rolling without slipping Midterm Review Physics 215 Spring 2017 Lecture 12-2 1 Midterm 3 Thursday April 13th Material covered: Ch 9 Ch 12 Lectures

### Exam 2: Equation Summary

MASSACHUSETTS INSTITUTE OF TECHNOLOGY Department of Physics 8.01 Physics Fall Term 2012 Exam 2: Equation Summary Newton s Second Law: Force, Mass, Acceleration: Newton s Third Law: Center of Mass: Velocity

### Rotational Mechanics Part II Torque. Pre AP Physics

Rotational Mechanics Part II Torque Pre AP Physics We have so far discussed rotational kinematics the description of rotational motion in terms of angle, angular velocity and angular acceleration. Now

### 9. h = R. 10. h = 3 R

Version PREVIEW Torque Chap. 8 sizeore (13756) 1 This print-out should have 3 questions. ultiple-choice questions ay continue on the next colun or page find all choices before answering. Note in the dropped

### Section Study Guide. Teacher Notes and Answers. Circular Motion and Gravitation

Section Study Guide Teacher Notes and Answers CIRCULAR MOTION 1. a. yes b. The car has a non-zero acceleration because the direction of motion is changing. c. The direction of centripetal acceleration

### Lecture 14 Feb

Lecture 14 Feb.12. 2016. Moving in circles Angular momentum Spinning at the Olympics Torques Why is a wrench useful? Center of Gravity Useful info for crossing Niagara falls on a wire The New Hubble Telescope

### SECOND MIDTERM -- REVIEW PROBLEMS

Physics 10 Spring 009 George A. WIllaims SECOND MIDTERM -- REVIEW PROBLEMS A solution set is available on the course web page in pdf format. A data sheet is provided. No solutions for the following problems:

### HATZIC SECONDARY SCHOOL

HATZIC SECONDARY SCHOOL PROVINCIAL EXAMINATION ASSIGNMENT VECTOR DYNAMICS MULTIPLE CHOICE / 45 OPEN ENDED / 75 TOTAL / 120 NAME: 1. Unless acted on by an external net force, an object will stay at rest

### Written Homework problems. Spring (taken from Giancoli, 4 th edition)

Written Homework problems. Spring 014. (taken from Giancoli, 4 th edition) HW1. Ch1. 19, 47 19. Determine the conversion factor between (a) km / h and mi / h, (b) m / s and ft / s, and (c) km / h and m

### Dynamics Homework. Assignment #1. Assignment #2

Dynamics Homework Assignment #1 Textbook: Read Section 4-1, 4-2 Online: Newton s Laws Lesson 1a, 1b, 1c * problems are for all students ** problems are for honors physics 1. * (a) If an object is at rest,

### 1. A 7.0-kg bowling ball experiences a net force of 5.0 N. What will be its acceleration? a. 35 m/s 2 c. 5.0 m/s 2 b. 7.0 m/s 2 d. 0.

Newton's Laws 1. A 7.0-kg bowling ball experiences a net force of 5.0 N. What will be its acceleration? a. 35 m/s 2 c. 5.0 m/s 2 b. 7.0 m/s 2 d. 0.71 m/s 2 2. An astronaut applies a force of 500 N to an

### Physics 211 Week 10. Statics: Walking the Plank (Solution)

Statics: Walking the Plank (Solution) A uniform horizontal beam 8 m long is attached by a frictionless pivot to a wall. A cable making an angle of 37 o, attached to the beam 5 m from the pivot point, supports

### Chap. 10: Rotational Motion

Chap. 10: Rotational Motion I. Rotational Kinematics II. Rotational Dynamics - Newton s Law for Rotation III. Angular Momentum Conservation (Chap. 10) 1 Newton s Laws for Rotation n e t I 3 rd part [N

### Exam 2--PHYS 101-Fall 2009

ame: Class: Date: Exam 2--PHYS 101-Fall 2009 Multiple Choice Identify the choice that best completes the statement or answers the question. 1. Consider this figure of a roller coaster: At which of these

### THE TWENTY-SECOND ANNUAL SLAPT PHYSICS CONTEST SOUTHERN ILLINOIS UNIVERSITY EDWARDSVILLE APRIL 21, 2007 MECHANICS TEST. g = 9.

THE TWENTY-SECOND ANNUAL SLAPT PHYSICS CONTEST SOUTHERN ILLINOIS UNIVERSITY EDWARDSVILLE APRIL 21, 27 MECHANICS TEST g = 9.8 m/s/s Please answer the following questions on the supplied answer sheet. You

### Centripetal force keeps an Rotation and Revolution

Centripetal force keeps an object in circular motion. Which moves faster on a merry-go-round, a horse near the outside rail or one near the inside rail? While a hamster rotates its cage about an axis,

### Unit 2: Vector Dynamics

Multiple Choice Portion Unit 2: Vector Dynamics 1. Which one of the following best describes the motion of a projectile close to the surface of the Earth? (Assume no friction) Vertical Acceleration Horizontal