Your goal will be to extract a measure of the stiffness of one particular spring. The figure shows the stable condition of the spring when no load is applied, the condition of the spring when elongated to an amount x under the load of 1 n, the condition of the spring elongated to 2x under the influence of load 2 n. Materials that obey hookes law are called hookean materials. The shape of both graph clearly outline how force and extension were directly proportional to one another, and how both material obeyed hookes law during the experiment. In this note we propose an alternative approach to the experimental study of hookes law that takes into account the variation of the elastic constant as a function of the initial length of the spring. Researched and wrote papers on geometry, snowflakes, heat, astronomy, fossils, air pumps, light, watches, telescopes and silkwormsamong other things. Measurement of a spring constant prediction make a sketch of the graph that will show how the displacement of the spring changes as the elastic force increases. Hypothesis the change in length of spring is directly proportional to the applied so that it will cause greater change in length of the spring for greater force applied.
The experiment dictated that each material would be stretched by applying a force that increased from 1 newton to 9 newtons, with the deformation of the material in millimetres being recorded at every. Discuss relative merits of several methods of measuring force. Write a multiplechoice question that requires the reader to understand the difference between the free length of a spring, its stretched length, and its deflection x as used in hookes law. Under these conditions the object returns to its original shape and size upon removal. The experiment dictated that each material would be stretched by applying a force. The figure shows the stable condition of the spring when no load is applied, the condition of the spring when elongated to an amount x under the load of 1 n, the condition of the spring elongated to. This experiment will use a spring scale in place of calibrated weights to increase the force on a spring. Hookes law states that if a force f, is applied to the opposite end of a material holded on, parallel to the length, then in general the material is either compressed or stretched by distance x. Introduction i was asked to carry out an experiment to prove hookes law by means of investigating the behaviour of elasticity of three different materials. When autoplay is enabled, a suggested video will automatically play next. How accurately hooke s law describe the behavior of real springs. To collect the data, experiment needs to be performed using three different types of materials,material 1, material 2 and material 3. Hookes law utk department of physics and astronomy. The spring constant can be determine by using the formula of hookes law.
F s, the force of the spring is opposite the direction of. An experiment to investigate hooke s law variables. For me, what makes this software stand out is that it really makes the user think about what they are doing, rather than just blindly pressing buttons. Guidelines for a physics lab reports baylor university. Hookes law experiment hookes law experiment and analysis.
Here f is the restoring force or the force exerted by the spring on the external agent and k is a. Hookes law experiment report done by yovaphine wijaya 11 science 1 aim to investigate hookes law for simple strings or rubber. Hookes law states that, for certain elastic materials, force is proportional to extension, when a sample is stretched. The spring constant refers to how stiff a spring is. Sep 26, 2016 this video is about setting up of experient to determine the spring constant. Pdf in this note we propose an alternative approach to the experimental study of hookes law that takes into account the variation of the elastic. Hooke s law says that the opposing force of a spring is directly proportional to the amount by which the spring is stretched. A new hookes law experiment article pdf available in the physics teacher 401. We aim to study the relationship between the deforming force and amount the spring stretches. Begin recording data, and then pull the cart backward extending the spring about 10.
Is hookes law an exact law of physics or an approximation. Download pdf for future reference install our android app for easier access. To become acquainted with hooke s law for springs and to see how we can describe the behavior of a spring in terms of the energy stored in a spring potential energy. However, this method will add an additional step to the experiment. The following readings were obtained in an experiment to verify hookes law using a spring. We were examining the effect of exerting force on the specific. In this manner, the cord stretches more with larger displacements and masses. Our present interest is in whether or not the data will fit on a linear trend line. Record the position with the 50 gram mass holder in the spreadsheet.
The forces supplied by the masses are due to their weight which can be found by. This means that the extension of the sample increases linearly with the amount of force applied. Hookes law states that, provided the elastic limit of an elastic material is not exceeded, the extension of an elastic material is proportional to the load or applied force. In this investigation you will measure force from the spring, and spring deformation spring deflection using the force and position sensors on the smart cart.
Hookes law is a scientific law which concerns itself with the elasticity of materials. If youre seeing this message, it means were having trouble loading external resources on our website. In symbols, f kx, where f is the force, x is the stretch, and k is a constant of proportionality. Hookes law in terms of stress and strain is stress strain in terms of the definitions l l y a f the constant of proportionality is called the elastic modulus or youngs modulus.
The spring i hookes law and oscillations objectives. Follow up lesson after completing practical lesson investigating forceextension. The main objective of this experiment is to show hooke s law of spring, calculate the total energy absorbing in the spring. Dear readers, recently i had an opportunity to take part in the hookes law experiment. The primary purpose of the lab is to study hooke s law and simple harmonic motion by studying the behavior of a mass on a spring. In your software, zero the smart cart force sensor while nothing is touching the hook. Will it be a linear, quadratic, or cubic relationship.
Objectives the main objective of this experiment is to show hookes law of spring, calculate the total energy absorbing in the spring. How are force and displacement related when stretching a spring. If youre behind a web filter, please make sure that the domains. A formal lab report should include a title page like this one, with all of the appropriate information a descriptive title, your name, the course title, the date, and an abstract. It tries to bring the deformed end of the spring to the original equilibrium position. The shape of a body will distort when a force is applied to it. The experiment on the hookes law will help to determine the behaviour of three different elastic materials, and help to investigate the differences of their behaviour around their elastic regions. The lab report assistant is simply a summary of the experiments questions, diagrams if needed, and data tables that should be addressed in a formal lab report. Spring into action and find out for yourself with this project. To measure the spring constant of a spring using two different methods. A relationship called hookes law after the 17th century scientist who studied it. Version 4202640001 lab report assistant this document is not meant to be a substitute for a formal laboratory report. The results of this experiment were not reflective of hookes law because the bungee cord was found to act differently than an ideal spring. Hookes law experiment pawel kostkowski psk1g14 november 14, 2014 i am aware of the requirements of good academic practice and the potential penalties for any breaches.
Add additional 50 gram masses to the mass holder and record the position of. Lab report 1 experiment 205 hookes law abstract hookes law. Elastic force acts in the opposite direction of the external force. If hookes law is correct, then, the graph of force versus stretch will be a. Controlled variables include using the spring and masses used. A formal lab report should include a title page like this one, with all of the appropriate. This video is about setting up of experient to determine the spring constant. If a weight, w mg, is hung from one end of an ordinary spring, causing it to stretch a distance x, then an equal and opposite force, f, is created in the spring which opposes the pull of the weight.
To verify that this behavior is accurately described by hooks law. Hookes law elastic force occurs in the spring when the spring is being stretchedcompressed or deformed. In this part of the experiment we will test whether a spring obeys hooke s law. A definition of hookes law is applied and investigated, looking at typical questions. Hookes law form 2 physics notes font size decrease font size. Once a sufficient amount of force has been applied, so as to extend the material beyond it. Hookes law, law of elasticity discovered by the english scientist robert hooke in 1660, which states that, for relatively small deformations of an object, the displacement or size of the deformation is directly proportional to the deforming force or load. Hookes law and experiment to show it flashlearners. The software is user friendly, intuitive and it looks good on the screen, with graphics that resemble real laboratory equipment. The constant k is called the spring constant, or stiffness coefficient.
With hookes law apparatus for physical science and physics, students can measure and prove that the stretch of a spring is proportional to its load. The lab report assistant is simply a summary of the experiments questions, diagrams if needed, and data. Objective the objective of this lab is to show that the response of a spring when an external agent changes its equilibrium length by x can be described by hookes law, f. Ppt hookes law powerpoint presentation free to download. Introduction hookes law states that the force applied by a spring, f, relates linearly to the springs displacement from equilibrium, x. Click the link below to download the full form 2 physics notes pdf document. Hookes law was one of the few things he was popularly credited with creating.
The relationship of this can be best explained through the equation. In conclusion, it can be said that this experiment is successful and the results. I am aware of the requirements of good academic practice and the potential penalties for any breaches. In this experiment, we aim to study the elastic properties of the spring and the force constant of the spring. Students will invesfigate hookes law and determine the spring constant for two springs and a rubber band. Hookes law holds up to a maximum stress called the proportional limit. Commonly, a hooke s law experiment is conducted by adding increasing masses to a spring and recording the cumulative stretch elongation of the spring. To investigate hookes law, attach a hoop spring bumper to a dualrange force sensor that. When a force is applied to an elastic object, the object will be stretched. It states that when a force is applied to a spring, the displacement of that spring will be directly proportional to the amount of force applied. Investigating hookes law experimentally hookes law. Hookes law will be verified for a spring and the force constant will be calculated by measuring the amount the spring is stretched when various masses are hung on it. Hookes law experiment 25770187 university of southampton, foundation year engineering desmond kwesi acquah november, 2012 i am aware of the requirements of good academic practice and the potential penalties for any breaches.
In the elastic limit, the magnitude of the elastic force of the spring is proportional to the deformation of the spring. Hooke s law quick reference the physical principle that the stress within a solid is proportional to the strain, so that the movement of an object is proportional to the pressure that is applied to it. The equation says that the force f of the spring is equal to the spring constant k, a measure of the stiffness of the spring times the distance x that the spring has been stretched. Investigating hooke s law aim this experiment is aimed to investigate the relationship between the mass that is being slotted at the end of spring and the time taken for the spring to make a 20 complete oscillations.
Nov 14, 2014 the experiment on the hookes law will help to determine the behaviour of three different elastic materials, and help to investigate the differences of their behaviour around their elastic regions. Experiment 205 hookes law abstract hookes law is a principle that states that the force needed to extend or compress a spring by some distance is proportional to that distance. This lab is set up for us to to be able to determine the spring constant with two different methods and the gravitational acceleration with a pendulum. What physics quantity does the slope of this graph represent. Hookes law experiment results and analysis dan best. The law is named after 17thcentury british physicist robert. Hookes law is a law of physics that states that the force f needed to extend or compress a spring by some distance x scales linearly with respect to that distancethat is, where k is a constant factor characteristic of the spring i. The actual value and the theoretical value is not that far and only 1. To become acquainted with hookes law for springs and to see how we can describe the behavior of a spring in terms of the energy stored in a spring potential energy. One thing to notice is how y2 displayed on graph 2 has a steeper gradient than y1. The spring i hooke s law and oscillations objectives. Equipment tripod base barrel base support rod, square, lmm right angle clamp cursor, 1 pair weight holder f. Relate your experiment to a future class discussion of hookes law.
Hookes law says that the stretch of a spring is directly proportional to the applied force. To emphasize that x refers to the change in length of the spring we write f mg k. Nov 20, 2017 i was asked to carry out an experiment to prove hookes law by means of investigating the behaviour of elasticity of three different materials. Can springs be used to make accurate scales for weighing objects. In this part of the experiment we will test whether a spring obeys hookes law. Procedure in this lab, you will observe a mass on a spring and.
The primary purpose of the lab is to study hookes law and simple harmonic motion by studying the behavior of a mass on a spring. Example excel spreadsheet for hookes law experiment. Applications of a recurring principle article pdf available in ajp advances in physiology education 334. Hookes law experiment consider a spring with load application as shown in the figure.