# DEVELOPMENT OF DROP WEIGHT IMPACT TEST MACHINE

Save this PDF as:

Size: px
Start display at page:

## Transcription

1 CHAPTER-8 DEVELOPMENT OF DROP WEIGHT IMPACT TEST MACHINE 8.1 Introduction The behavior of materials is different when they are subjected to dynamic loading [9]. The testing of materials under dynamic conditions needs an efficient and reliable equipment to experimentally examine and quantify the dynamic behavior of materials under low velocity impact loads. The range of such impact loads vary from a few m/s to several hundred m/s (such as a bullet impact). It is not possible with any one apparatus to cover a velocity range such as this. Various devices such as explosive or air gun rigs are employed for high velocity impact tests. Drop weight machines are in use to conduct test at low velocity impact loads. This chapter presents the details of a custom-built low velocity drop weight impact test machine which has been designed and fabricated to carry out dynamic tests. 8.2 Design Objectives The drop weight impact test machine was developed to perform low velocity impact tests up to a maximum velocity of 10 m/s. The machine was designed to test specimens of varying geometry which can accommodate a maximum cross sectional area of (150x150) mm 2. The energy of the impactor can also be varied by changing the mass of the impactor. 8.3 Design Principle A machine based on the impacts produced by dropped mass works on the principle of free fall velocity under gravity which is given by where, g = Acceleration due to gravity (m/s 2 ) h = Drop height (m) 100

2 energy which is given by ts potential Potential Energy = m g h. where, m = Drop mass (kg) This energy has to be absorbed by any specimen under test. 8.4 Description of the Machine Figure (8.1) shows the mechanical structure of the developed and commissioned machine. It consists of a frame with two mild steel, channels each 6 m high. The channels were erected vertically on a sound concrete foundation and fixed to a concrete bed. Ground mild steel guide strips were attached to the flat faces of the two channels to guide the fall of the dropped mass. The drop mass (impactor) assembly consists of two flat circular bottom and top masses held between two horizontal flat plates by four bolts. The plates have grooves at their sides. These grooves envelope the guide strips and guide the vertical sliding motion of the drop mass. Several masses can be included between the top and bottom disks to increase the mass of the impactor and thereby the energy of the impactor for testing different materials. The top disk of the impactor is attached with a mass hanger which in turn is suspended by two brackets pinned to a frame that grips the mass hanger and lifts the mass. The metal frame is also guided by the guide strips on the channels. The impactor can be lifted to the required height with the help of a wire rope which runs over a pulley and rope drum assembly. A ratchet mechanism was used to hold the impactor at the desired height to achieve the predetermined impact velocity. The impactor lifting system can be operated manually by hand cranking or automatically by an electric motor. An impactor release mechanism is devised and fitted to the sliding metal frame. This impactor release mechanism is used to release the impactor to so as to effect the sudden drop of the mass. The mass drops on to the test specimen and deforms it while the later dissipates the kinetic energy of the mass. The deformation of the specimen and the force that is transmitted to the base which supports the test specimens have to 101

3 be measured. Care was taken to arrest the accidental drop of the impactor. This was effected by providing two cross bars between the channels. These bars are put in place at all the times until the specimen is completely ready for the test. Steel Channels Load Release Mechanism Mass Carrier Drop Hammer Ratchet Mechanism Platform Figure 8.1 Drop Weight Impact Test Machine 8.5 Instrumentation The drop weight test facility consists of various devices which are used to measure the velocity, force and displacement of the impactor to calculate the energy 102

4 absorbed by the specimen under the test. The details of the instrumentation employed for the purpose is explained below Accelerometer A simple and direct way to measure the velocity is to measure the acceleration of the drop mass. The product of acceleration and mass provides the force of impact. The successive integration of the acceleration signal gives velocity and displacements. An accelerometer (of Bruel and Kjaer make) was fixed onto the top disk of impactor assembly to measure the acceleration of the dropped mass (impactor) and was connected to one of the channels of the data acquisition system. A brief technical specification of the accelerometer used is shown in Table 8.1. The accelerometer is shown in Figure (8.2). Table 8.1 Specifications of accelerometer Piezoelectric Charge Accelerometer B&K 4505 Charge sensitivity 0.3 pc/ms -2 or 3 pc/g ± 2 % Voltage sensitivity 0.28 mv/ms -2 or 2.8 mv/g ± 2 % Piezoelectric material PZ23 Maximum operational shock (± Peak) 20 kms -2 Maximum continuous sinusoidal acceleration 30 kms -2 Mounting stud UNF, 4.5 mm long Frequency range - 5 % : 0.2 Hz to 8000 Hz 0.2 Hz to 8000 Hz Velocity Measuring Device An alternate velocity measuring system was also developed based on the principle of electromagnetic induction to measure the impactor velocity. This velocity measuring system consists of a strip with continuous wire wound coils fixed on it at a distance of 10 cm apart. This coiled strip was then glued to the front web of the left 103

5 mild steel channel. A strong magnet is fitted to the impactor using a bracket. The magnet while moving down with impactor, crosses the wire wound coils and produces electric pulses due to electromagnetic induction. This can be directly captured by the data acquisition system. The known distance between the wire wound coils divided by the time interval between the respective pulses directly indicate the average velocity between them. The velocity measuring device is shown in Figure (8.2). b a c Figure 8.2(a) Accelerometer (b) Velocity measuring device and (c) Moving magnet Design and Fabrication of Load Cell A load cell was devised and built to measure the impact forces generated during the dynamic crushing test on the specimens. The load cell consists of a 200 mm long spring steel tube with an outer and inner diameter of 160 mm and 150 mm respectively. The end faces of the steel tube were ground and welded to flat steel plates of 210 mm diameter and 20 mm thickness at its top and bottom. The assembly was fabricated and extreme care was taken to ensure the squareness of the plates with respect to the tube axis and thus the surface parallelism between the top and bottom plates was assured. Four electrical resistance metal foil type strain gauges were 104

9 8.6 Data Acquisition System The accelerometer and the velocity measuring devices were connected to two of the channels independently. The signals sensed by the accelerometer were fed to a charge amplifier that converts the charge signal to a voltage signal. This voltage signal was then sent to a personal computer (or lap top) through a suitable data acquisition card. The data acquired was then converted to a compatible ASCII file that gives the acceleration-time data in digital form. This fundamental data was then mathematically processed in the Hypergraph software to derive velocity, displacement, and force. The force-displacement curve was then plotted and the area under such curve gives the energy absorbed. Figure (8.7) shows the data acquisition system with the associated charge amplifier used in this study. Charge amplifier Data acquisition system Figure 8.7 Elements of data acquisition system 108

10 8.7 Performance Evaluation of Drop Weight Test Machine. The performance of the machine was evaluated by calculating the % error in the velocities measured by the accelerometer and velocity measuring devices with that of the theoretical velocities gained by the falling mass for the known drop heights. Table 8.3 shows the comparative data of the velocities measured by accelerometer and the device. The percentage error of the measured and theoretical velocities are then compared. Table 8.3 Comparative data of the measured and theoretical velocities Drop height (m) H1 = 2 H2 = 3 H3 = 3.5 Velocity measurement by Velocity (ms -1 % Error of Velocity ) (Theory) Trail Accelero- Velocity Accelero- Velocity meter device (ms -1 ) meter device The test results indicate that, the error of velocity indicated by the velocity measuring device is in the range of 4 to 9 percent and that measurement from the accelerometer is in the range of 3 to 7 percent. The error in the measured velocity is probably due to the effect of friction between the guide ways and the impactor assembly. Therefore this error is taken to be allowable and the design of the machine is considered satisfactory. 109

### 10 Measurement of Acceleration, Vibration and Shock Transducers

Chapter 10: Acceleration, Vibration and Shock Measurement Dr. Lufti Al-Sharif (Revision 1.0, 25/5/2008) 1. Introduction This chapter examines the measurement of acceleration, vibration and shock. It starts

### CRYOGENIC CONDUCTION COOLING TEST OF REMOVABLE PANEL MOCK-UP FOR ITER CRYOSTAT THERMAL SHIELD

CRYOGENIC CONDUCTION COOLING TEST OF REMOVABLE PANEL MOCK-UP FOR ITER CRYOSTAT THERMAL SHIELD K. Nam, a D. K. Kang, a W. Chung, a C. H. Noh, a J. Yu, b N. I. Her, b C. Hamlyn-Harris, b Y. Utin, b and K.

### Use of reciprocity calibrated accelerometer standards for performing routine laboratory comparison calibrations. Technical paper 226

Use of reciprocity calibrated accelerometer standards for performing routine laboratory comparison calibrations Technical paper 6 Use of reciprocity calibrated accelerometer standards for performing routine

### INSTALLATION INSTRUCTIONS ATV Plow Blade Part Number: (50 ), (54 ), or (60 ) Application: All Terrain Vehicles

INSTALLATION INSTRUCTIONS ATV Plow Blade Part Number: 78950 (50 ), 78954 (54 ), or 78960 (60 ) Application: All Terrain Vehicles Your safety, and the safety of others, is very important. To help you make

### Rotational Inertia (approximately 2 hr) (11/23/15)

Inertia (approximately 2 hr) (11/23/15) Introduction In the case of linear motion, a non-zero net force will result in linear acceleration in accordance with Newton s 2 nd Law, F=ma. The moving object

### THE BALLISTIC PENDULUM AND THE LAW OF CONSERVATION OF ENERGY

THE BALLISTIC PENDULUM AND THE LAW OF CONSERVATION OF ENERGY Objectives 1) To study the laws of conservation of energy, conservation of momentum, and the elements of projectile motion using the ballistic

### The Ballistic Pendulum

The Ballistic Pendulum Experimental Objectives The objective of this experiment is to study the law of conservation of momentum. We will apply the principle of conservation of linear momentum to a case

### The 5rd International Conference on. COMEC OCTOBER 2013, Brasov, Romania WORK SAFETY

The 5rd International Conference on Computational Mechanics and Virtual Engineering COMEC 2013 24 25 OCTOBER 2013, Brasov, Romania THEORETICAL STUDIES AND EXPERIMENTAL DETERMINATIONS FOCUSED ON THE INCREASE

### RELEASED. Spring 2013 North Carolina Measures of Student Learning: NC s Common Exams

Released Form Spring 2013 North arolina Measures of Student Learning: N s ommon Exams Physics RELESE Public Schools of North arolina State oard of Education epartment of Public Instruction Raleigh, North

### LEP Stirling engine

Stirling engine LEP Related topics First and second law of thermodynamics, reversible cycles, isochoric and isothermal changes, gas laws, efficiency, Stirling engine, conversion of heat, thermal pump.

### Introduction to Mechanical Vibration

2103433 Introduction to Mechanical Vibration Nopdanai Ajavakom (NAV) 1 Course Topics Introduction to Vibration What is vibration? Basic concepts of vibration Modeling Linearization Single-Degree-of-Freedom

### THE CONSERVATION OF ENERGY - PENDULUM -

THE CONSERVATION OF ENERGY - PENDULUM - Introduction The purpose of this experiment is to measure the potential energy and the kinetic energy of a mechanical system and to quantitatively compare the two

### PHY218 SPRING 2016 Review for Exam#2: Week 9 Review: Newton s Laws, Work, Energy, and Power

Review: Newton s Laws, Work, Energy, and Power These are selected problems that you are to solve independently or in a team of 2-3 in order to better prepare for your Exam#2 1 Problem 1: Inclined Plane

### TEST 2. This test is on the final sections of this session's syllabus and. should be attempted by all students.

5 TEST 2 This test is on the final sections of this session's syllabus and should be attempted by all students. Anything written here will not be marked. Formulae and data E = hc " " = neµ = ne2 # m N

### 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 jeweler needs to electroplate gold (atomic mass 196.97 u) onto a bracelet. He knows

### Investigating Springs (Simple Harmonic Motion)

Investigating Springs (Simple Harmonic Motion) INTRODUCTION The purpose of this lab is to study the well-known force exerted by a spring The force, as given by Hooke s Law, is a function of the amount

### July 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

### PHYSICS. SCIENCE Paper 1. Answers to this Paper must be written on the paper provided separately.

PHYSICS SCIENCE Paper 1 ( hour ) Answers to this Paper must be written on the paper provided separately. You will not be allowed to write during the first 15 minutes. This time is to be spent in reading

### Renewable Energy Systems

Renewable Energy Systems 2 Buchla, Kissell, Floyd Chapter Outline Electrical Fundamentals 2 Buchla, Kissell, Floyd 2-1 ENERGY, CHARGE, AND VOLTAGE 2-2 ELECTRICAL CURRENT 2-3 RESISTANCE AND OHM'S LAW 2-4

### APPLICATIONS OF VIBRATION TRANSDUCERS

APPLICATIONS OF VIBRATION TRANSDUCERS 1) Measurements on Structures or Machinery Casings: Accelerometers and Velocity Sensors Used in gas turbines, axial compressors, small and mid-size pumps. These sensors

### THE SCREW GAUGE. AIM: To learn to use a Screw Gauge and hence use it to find the dimensions of various regular materials given.

EXPERIMENT NO: DATE: / / 0 THE SCREW GAUGE AIM: To learn to use a Screw Gauge and hence use it to find the dimensions of various regular materials given. APPARUTUS: Given a Screw Gauge, cylindrical glass

### PhysicsAndMathsTutor.com

PhysicsAndMathsTutor.com 1 1. Define electric field strength at a point in space....... [Total 1 marks] 2. Fig. 1 shows a square flat coil of insulated wire placed in a region of a uniform magnetic field

### Cat. Multi-Processors. Hydraulic Excavators. Multi-Processor/Hydraulic Excavator Compatibility. Features: Maximum Productivity.

Cat Multi-Processors Hydraulic Excavators Maximum Productivity Big challenges are reduced to small pieces, thanks to high cutting and crushing forces generated by the cross-mounted cylinder. High productivity

### D e s i g n o f R i v e t e d J o i n t s, C o t t e r & K n u c k l e J o i n t s

D e s i g n o f R i v e t e d J o i n t s, C o t t e r & K n u c k l e J o i n t s 1. Design of various types of riveted joints under different static loading conditions, eccentrically loaded riveted joints.

### MEASUREMENTS ACCELERATION OF GRAVITY

MEASUREMENTS ACCELERATION OF GRAVITY Purpose: A. To illustrate the uncertainty of a measurement in the laboratory. The measurement is that of time. The data obtained from these measurements will be used

### Good Vibes: Introduction to Oscillations

Good Vibes: Introduction to Oscillations Description: Several conceptual and qualitative questions related to main characteristics of simple harmonic motion: amplitude, displacement, period, frequency,

### Experimental characterization of dry friction isolators for shock vibration isolation

PROCEEDINGS of the 22 nd International Congress on Acoustics Structural Acoustics and Vibration (others): Paper ICA2016-602 Experimental characterization of dry friction isolators for shock vibration isolation

### Dependence of Levitation Force on Frequency of an Oscillating Magnetic Levitation Field in a Bulk YBCO Superconductor

Dependence of Levitation Force on Frequency of an Oscillating Magnetic Levitation Field in a Bulk YBCO Superconductor Hamilton Carter a, Stephen Pate b, George Goedecke c a. Department of Physics, New

### Development of axial flux HTS induction motors

Available online at www.sciencedirect.com Procedia Engineering 35 (01 ) 4 13 International Meeting of Electrical Engineering Research ENIINVIE-01 Development of axial flux HTS induction motors A. González-Parada

### AP Physics Problems Simple Harmonic Motion, Mechanical Waves and Sound

AP Physics Problems Simple Harmonic Motion, Mechanical Waves and Sound 1. 1977-5 (Mechanical Waves/Sound) Two loudspeakers, S 1 and S 2 a distance d apart as shown in the diagram below left, vibrate in

### PIZZI FRANCO via Ripoli, 207/E Firenze - Italy. Instruments and Systems for Dam Monitoring and Structural Controls

Our firm acquired this activity from the Officine Galileo S. p. A. (including instrumentation projects, patents, drawings, testing and manufacturing devices, etc.). For this reason we are able to provide

### Lecture T2 The Pendulum-Based Start Gate (US 8,016,639 B2)

1 Lecture T2 The Pendulum-Based Start Gate (US 8,016,639 B2) INTRODUCTION Literally millions of Pinewood Derby races have been run since the inception of the race in 1953, mostly by Cub Scouts and their

### The Q Machine. 60 cm 198 cm Oven. Plasma. 6 cm 30 cm. 50 cm. Axial. Probe. PUMP End Plate Magnet Coil. Filament Cathode. Radial. Hot Plate.

1 The Q Machine 60 cm 198 cm Oven 50 cm Axial Probe Plasma 6 cm 30 cm PUMP End Plate Magnet Coil Radial Probe Hot Plate Filament Cathode 2 THE Q MACHINE 1. GENERAL CHARACTERISTICS OF A Q MACHINE A Q machine

### Physical Properties Testing Technical Bulletin

Technical Bulletin MANUFACTURER Raven Lining Systems 13105 E. 61 st Street, Suite A Broken Arrow, OK 74012 (918) 615-0020 TENSILE TESTING OF PLASTICS ASTM D638, ISO 527 Tensile tests measure the force

### Available online at ScienceDirect. Procedia Engineering 157 (2016 )

Available online at www.sciencedirect.com ScienceDirect Procedia Engineering 157 (2016 ) 264 270 IX International Conference on Computational Heat and Mass Transfer, ICCHMT2016 A device for measuring the

### 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

### Human Arm. 1 Purpose. 2 Theory. 2.1 Equation of Motion for a Rotating Rigid Body

Human Arm Equipment: Capstone, Human Arm Model, 45 cm rod, sensor mounting clamp, sensor mounting studs, 2 cord locks, non elastic cord, elastic cord, two blue pasport force sensors, large table clamps,

### Physics 1308 Exam 2 Summer 2015

Physics 1308 Exam 2 Summer 2015 E2-01 2. The direction of the magnetic field in a certain region of space is determined by firing a test charge into the region with its velocity in various directions in

### 1, 2, 3, 4, 6, 14, 17 PS1.B

Correlations to Next Generation Science Standards Physical Science Disciplinary Core Ideas PS-1 Matter and Its Interactions PS1.A Structure and Properties of Matter Each atom has a charged substructure

### Chapters 10 & 11: Energy

Chapters 10 & 11: Energy Power: Sources of Energy Tidal Power SF Bay Tidal Power Project Main Ideas (Encyclopedia of Physics) Energy is an abstract quantity that an object is said to possess. It is not

### Relativistic Electrons

Relativistic Electrons Physics 300 1 Introduction In this experiment you will make independent measurements of the momentum and kinetic energy of electrons emitted from a β source. You will use these data

### On Non-Ideal Simple Portal Frame Structural Model: Experimental Results Under A Non-Ideal Excitation

On Non-Ideal Simple Portal Frame Structural Model: Experimental Results Under A Non-Ideal Excitation J M Balthazar 1,a, RMLRF Brasil,b and FJ Garzeri 3, c 1 State University of São Paulo at Rio Claro,

### v = E B FXA 2008 UNIT G485 Module Magnetic Fields BQv = EQ THE MASS SPECTROMETER

UNIT G485 Module 1 5.1.2 Magnetic Fields 11 Thus, in order for the particle to suffer NO DEFLECTION and so exit the device at Y : From which : MAGNETIC FORCE UP = ELECTRIC FORCE DOWN BQv = EQ THE MASS

### Strength Analysis and Experiment of High Speed Railway Gearbox Bracket

Send Orders for Reprints to reprints@benthamscience.ae 66 The Open Mechanical Engineering Journal, 015, 9, 66-70 Open Access Strength Analysis and Experiment of High Speed Railway Gearbox Bracket Jianwei

### Physics 218 Exam II. Spring 2017 (all sections) March 20 th, 2017

Physics 218 Exam II Spring 2017 (all sections) March 20 th, 2017 Rules of the exam: Please fill out the information and read the instructions below, but do not open the exam until told to do so. 1. You

### Lab 1: Determination of e/m for the electron

Lab 1: Determination of e/m for the electron Background Reading: Tipler, Llewellyn pp. 125 130; this covers the original method of Thomson which is somewhat different from that used in this experiment

### Overview. Sensors? Commonly Detectable Phenomenon Physical Principles How Sensors Work? Need for Sensors Choosing a Sensor Examples

Intro to Sensors Overview Sensors? Commonly Detectable Phenomenon Physical Principles How Sensors Work? Need for Sensors Choosing a Sensor Examples Sensors? American National Standards Institute A device

### Finite Element Analysis of Piezoelectric Cantilever

Finite Element Analysis of Piezoelectric Cantilever Nitin N More Department of Mechanical Engineering K.L.E S College of Engineering and Technology, Belgaum, Karnataka, India. Abstract- Energy (or power)

### AP* Electrostatics Free Response Questions

AP* Electrostatics Free Response Questions 1987 Q2 Object I, shown above, has a charge of +3 10 6 coulomb and a mass of 0.0025 kilogram. (a) What is the electric potential at point P, 0.30 meter from object

### PhysicsAndMathsTutor.com 1

PhysicsAndMathsTutor.com 1 Q1. A grinding wheel is used to sharpen chisels in a school workshop. A chisel is forced against the edge of the grinding wheel so that the tangential force on the wheel is a

### Observational Methods and

Observational Methods and NATM System for Observational approach to tunnel design Eurocode 7 (EC7) includes the following remarks concerning an observational method. Four requirements shall all be made

### 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

### Electromagnetics in COMSOL Multiphysics is extended by add-on Modules

AC/DC Module Electromagnetics in COMSOL Multiphysics is extended by add-on Modules 1) Start Here 2) Add Modules based upon your needs 3) Additional Modules extend the physics you can address 4) Interface

### EXPERIMENTAL EVALUATION OF SHEAR STRENGTH OF WOVEN WEBBINGS

EXPERIMENTAL EVALUATION OF SHEAR STRENGTH OF WOVEN WEBBINGS Kevin L. Peil +, Ever J. Barbero +, Eduardo M. Sosa* + Department of Mechanical and Aerospace Engineering, West Virginia University (WVU), Morgantown,

### 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

### DEVELOPMENT OF MEASUREMENT STANDARD FOR DYNAMIC PRESSURE AT MIKES

DEVELOPMENT OF MEASUREMENT STANDARD FOR DYNAMIC PRESSURE AT MIKES Sari Saxholm, Antti Lakka, Martti Heinonen, Kari Riski MIKES, Centre for Metrology and Accreditation Tekniikantie 1, Espoo Finland telephone:

### ELECTRICAL AND THERMAL DESIGN OF UMBILICAL CABLE

ELECTRICAL AND THERMAL DESIGN OF UMBILICAL CABLE Derek SHACKLETON, Oceaneering Multiflex UK, (Scotland), DShackleton@oceaneering.com Luciana ABIB, Marine Production Systems do Brasil, (Brazil), LAbib@oceaneering.com

### Francisco Paulo Lépore Neto. Marcelo Braga dos Santos. Introduction 1. Nomenclature. Experimental Apparatus and Formulation

Francisco Paulo Lépore Neto and Marcelo Braga dos Santos Francisco Paulo Lépore Neto fplepore@mecanica.ufu.br Federal University of Uberlandia School of Mechanical Engineering 38408-902 Uberlandia, MG,

### TINIUS OLSEN Testing Machine Co., Inc.

Interpretation of Stress-Strain Curves and Mechanical Properties of Materials Tinius Olsen has prepared this general introduction to the interpretation of stress-strain curves for the benefit of those

### Magnetic Deflection of Electrons

Magnetic Deflection of Electrons Objective Materials 1. Banana leads 2. Cathode ray tube 3. Fisher 1V/30V power supply (set to 30V) 4. Fluke digital multimeter 5. High voltage power supply 6. Solenoid

### Magnetic Force and the Determination of µ Physics 208

Magnetic Force and the Determination of µ Physics 208 Purpose: To determine the permanent magnetic dipole moment,µ, using Helmholtz coils and a small neodymium-ironboron permanent magnet. Introduction:

### Nonlinear Finite Element Analysis of Airport Approach Lighting Structures under Impact Loading

8 th International LS-DYNA Users Conference Simulation Technology (2) Nonlinear Finite Element Analysis of Airport Approach Lighting Structures under Impact Loading M. Nejad Ensan *1, D.G. Zimcik 1, S.T.

### G r a d e 1 1 P h y s i c s ( 3 0 s ) Final Practice exam

G r a d e 1 1 P h y s i c s ( 3 0 s ) Final Practice exam G r a d e 1 1 P h y s i c s ( 3 0 s ) Final Practice Exam Instructions The final exam will be weighted as follows: Modules 1 6 15 20% Modules

### PHOENIX CONTACT - 04/2016. Features

Signal conditioner Data sheet 100238_de_06 1 Description PHOENIX CONTACT - 04/2016 Features The MCR-C-UI-UI(-450)-DCI(-NC) 3-way isolation amplifier is used to electrically isolate and convert analog signals.

### CHARGED PARTICLES IN FIELDS

The electron beam used to study motion of charged particles in electric and/or magnetic fields. CHARGED PARTICLES IN FIELDS Physics 41/61 Fall 01 1 Introduction The precise control of charged particles

### ELECTRICITY AND MAGNETISM, A. C. THEORY AND ELECTRONICS, ATOMIC AND NUCLEAR PHYSICS

UNIT 2: ELECTRICITY AND MAGNETISM, A. C. THEORY AND ELECTRONICS, ATOMIC AND NUCLEAR PHYSICS MODULE 1: ELECTRICITY AND MAGNETISM GENERAL OBJECTIVES On completion of this Module, students should: 1. understand

### Improvement of Low Strain Pile Integrity Test

Improvement of Low Strain Pile Integrity Test Wenzhang Luo 1, Fan Chen 2, and Junling Hu 1 1 Deparment of Mechanical Engineering, University of Bridgeport, Bridgeport, CT 06604 2 National Center for Quality

### 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

### 1 of 6 10/21/2009 6:33 PM

1 of 6 10/21/2009 6:33 PM Chapter 10 Homework Due: 9:00am on Thursday, October 22, 2009 Note: To understand how points are awarded, read your instructor's Grading Policy. [Return to Standard Assignment

### Copyright 2008, University of Chicago, Department of Physics. Experiment I. RATIO OF SPECIFIC HEATS OF GASES; γ C p

Experiment I RATIO OF SPECIFIC HEATS OF GASES; γ C p / C v 1. Recommended Reading M. W. Zemansky, Heat and Thermodynamics, Fifth Edition, McGraw Hill, 1968, p. 122-132, 161-2. 2. Introduction You have

### DESIGN, DEVELOPMENT, AND COMMISSIONING OF A 120 kn DEADWEIGHT FORCE STANDARD MACHINE

DESIGN, DEVELOPMENT, AND COMMISSIONING OF A 120 kn DEADWEIGHT FORCE STANDARD MACHINE Andy Knott National Physical Laboratory, United Kingdom ABSTRACT This paper describes the development of a 120 kn deadweight

### The Cyclotron I. 1. Motion of the charges occurs in two semicircular containers, D 1. and D 2

1. Motion of the charges occurs in two semicircular containers, D 1 and D 2 referred to as the Dees 2. The Dees are evacuated in order to minimize energy loss from collisions 3. A high frrequency alternating

### The e/m Ratio of the Electron

OBJECTIVE The e/m Ratio of the Electron To study the behavior of a charged particle in the presence of a potential difference. To study the behavior of a charged particle moving in a magnetic field. To

### Experiment 5 Deflection of Electrons

Experiment 5 Deflection of Electrons Every statement in physics has to state relations between observable quantities. E. Mach OBJECTIVES To determine the effect of electric and magnetic fields on a beam

### Operational deflection shape analysis and vibration solving for a motion simulator.

Operational deflection shape analysis and vibration solving for a motion simulator. R.J. Jenneskens DCT 2006.135 Report international internship Startdate: Monday, June 5th 2006 Enddate: Thursday, January

### STRAIN GAUGE MEASUREMENT

STRAIN GAUGE MEASUREMENT INTRODUCTION There are many possible ways of measuring strain gauges using a Datascan. All methods measure the change in resistance of the gauge within a bridge circuit and the

### Tuesday, February 11, Chapter 3. Load and Stress Analysis. Dr. Mohammad Suliman Abuhaiba, PE

1 Chapter 3 Load and Stress Analysis 2 Chapter Outline Equilibrium & Free-Body Diagrams Shear Force and Bending Moments in Beams Singularity Functions Stress Cartesian Stress Components Mohr s Circle for

### EQUIPMENT Beta spectrometer, vacuum pump, Cs-137 source, Geiger-Muller (G-M) tube, scalar

Modern Physics Laboratory Beta Spectroscopy Experiment In this experiment, electrons emitted as a result of the radioactive beta decay of Cs-137 are measured as a function of their momentum by deflecting

### Experiment EF Electrostatic Force

Experiment EF Electrostatic Force Introduction In this experiment you ll investigate aspects of the electrostatic force This force has such varied roles as making currents flow in wires, holding atoms

### Newton s Laws and Free-Body Diagrams General Physics I

Newton s Laws and Free-Body Diagrams In the next few sections, we will be exploring some of the most fundamental laws of our universe, laws that govern the relationship actions and motion. These laws are

### 1982B1. The first meters of a 100-meter dash are covered in 2 seconds by a sprinter who starts from rest and accelerates with a constant

1982B1. The first meters of a 100-meter dash are covered in 2 seconds by a sprinter who starts from rest and accelerates with a constant acceleration. The remaining 90 meters are run with the same velocity

### M I N I S T R Y O F C O M M U N I C A T I O N S T E L E C O M M U N I C A T I O N S S E C T O R T E C H N I C A L S T A N D A R D F O R

M I N I S T R Y O F C O M M U N I C A T I O N S T E L E C O M M U N I C A T I O N S S E C T O R T E C H N I C A L S T A N D A R D F O R M A T E R I A L S N O. G 2 0 : 1 0 : 0 0 1 : 1 8 J U M P E R W I

### 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

### 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

### Laboratory Model of Magnetic Frictionless Flywheel and Hoverboard

Exigence Volume 1 Issue 1 Volume 1, Issue 1 (2017) Article 13 2017 Laboratory Model of Magnetic Frictionless Flywheel and Hoverboard Angel J. Gutarra-leon Northern Virginia Community College, ajg269@email.vccs.edu

### Magnetism. a) Ferromagnetic materials are strongly attracted to magnets. b) Paramagnetic materials are weakly attracted to magnets

Magnetism Types of Magnetic Materials Magnetic substances can be classified into three basic groups, according to their response to a magnet. Note the strength and direction of the interaction. a) Ferromagnetic

### Variable Speed 20" Single and Multi-spindle, Belt Drive Industrial Drill Presses

www.clausing-industrial.com Variable Speed 20" Single and Multi-spindle, Belt Drive Industrial Drill Presses Two Speed Variable Speeds 150-2000rpm Variable Speeds 200-1300rpm Variable Speeds 300-2000rpm

### the spring is compressed and x is the compression

Lecture 4 Spring problem and conservation of mechanical energy Hooke's Law The restoring force exerted by the spring is directly proportional to its displacement. The restoring force acts in a direction

### AAPT UNITED STATES PHYSICS TEAM AIP 2012

2012 F = ma Exam 1 AAPT UNITED STATES PHYSICS TEAM AIP 2012 2012 F = ma Contest 25 QUESTIONS - 75 MINUTES INSTRUCTIONS DO NOT OPEN THIS TEST UNTIL YOU ARE TOLD TO BEGIN Use g = 10 N/kg throughout this

### GLOSSARY OF PHYSICS TERMS. v-u t. a =

GLOSSARY OF PHYSICS TERMS Scalar: A quantity that has magnitude only. Vector: A quantity that has magnitude and direction. Speed is the distance travelled per unit time. OR the rate of change of distance.

### CHAPTER 6 VIBRATIONS AND WAVES 6.1 VIBRATIONS

(b) To test hypothesis (i), try at least three different lengths of chains with the controls being the same amplitude, same child, and same effort put into the push. To test hypothesis (ii), try at least

### VIBRATION RESPONSE OF AN ELECTRIC GENERATOR

Research Report BVAL35-001083 Customer: TEKES/SMART VIBRATION RESPONSE OF AN ELECTRIC GENERATOR Paul Klinge, Antti Hynninen Espoo, Finland 27 December, 2001 1 (12) Title A B Work report Public research

### AAPT UNITED STATES PHYSICS TEAM AIP 2008

8 F = ma Exam AAPT UNITED STATES PHYSICS TEAM AIP 8 8 F = ma Contest 5 QUESTIONS - 75 MINUTES INSTRUCTIONS DO NOT OPEN THIS TEST UNTIL YOU ARE TOLD TO BEGIN Use g = N/kg throughout this contest. You may

### Physics Spring 2006 Experiment 4. Centripetal Force. For a mass M in uniform circular motion with tangential speed v at radius R, the required

Centripetal Force I. Introduction. In this experiment you will study the centripetal force required for a mass in uniform circular motion. You will determine the centripetal forces required for different

### 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)

### For Customer Service, Rev A - 6/ OF 6

Item SP-6219 50 Universal Snow Plow Package RED Plow Item SP-6257 64 Universal Snow Plow Package RED Plow For Customer Service, Email CustomerService@yourfingertips-online.com Please read and understand

### Experiment 4: Projectile Motion

Experiment 4: Projectile Motion EQUIPMENT Figure 4.1: Ballistic Pendulum (Spring Gun) Pasco Ballistic Pendulum (Spring Gun) 2-Meter Stick Meter Stick Ruler Plumb Bob Carbon Paper Target Paper Launch Platform