Hookes law this is a wikipedia book, a collection of wikipedia articles that can be easily saved, imported by an external electronic rendering service, and ordered as a printed book. Some students carry out an experiment to find out how a spring stretched when loads were added to it. Hookes law of elasticity is an approximation that states that the extension of a spring is directly proportional to the load applied to it. My calculations were all shown for trial one which whereas follows. Hooke s law lab introduction the objective of the experiment was to investigate rubber bands follow hooke s law. Hookes law experiment consider a spring with load application as shown in the figure. Ohms law lab report making a custom paper is work through a lot of steps start working on your assignment right. At equilibrium, the spring is under two forces, the restoring force that proportional to the elongation, given by hookes law f r k l, and newtons second law, f g mg. We also present an adequate methodology to develop the analysis of graphics that students will obtain in a laboratory when they follow the new. Physics laboratory manual for engineering undergraduates. It was concluded that a rubber band did not obey hookes law. We also present an adequate methodology to develop the analysis of graphics that students will obtain in a laboratory when they follow the new method suggested here. Its applications go far beyond springs and rubber bands.
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. The spring constant, k, is different for different objects. Tes global ltd is registered in england company no 02017289 with its registered office at 26 red lion square london wc1r 4hq. If hookes law holds for the spring and the data fits a straight line, then the motion of masses vibrating up and down on the spring should be simple harmonic motion. Guidelines for a physics lab report a lab report has three main functions. In other words, he discovered that elastic materials like coiled springs stretch proportionately with the. Experiment on hookes law soton computer application. Attach a mass hanger directly to the bottom of the hanging spring and record the position of the bottom of the mass hanger relative to a meter stick. For help with downloading a wikipedia page as a pdf, see help. 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.
That is, where k is a constant factor characteristic of the spring, its stiffness. Introduction hookes law states that the force applied by a spring, f, relates linearly to the springs displacement from equilibrium, x. Note the time for 20 oscillations and hence obtain the average time period for free. Example excel spreadsheet for hookes law experiment. Fke, where k is the constant of proportionality called spring constant. Hooke s law states that the force applied by a spring, f, relates linearly to the spring s displacement from equilibrium, x. Rychlewski a novel method of describing elastic anisotropy based on the concept of an elastic eigen state is proposed. This is the hookes law experiment performed at qatar university in the physics 192 lab. The spreadsheet showing the results of the coulomb s law. Draw a free body diagram in the space below and apply newtons second law to derive an expression for the magnitude of the force exerted by the spring in terms of the weight of the mass. Procedure hang a spring from a horizontal metal rod. Hookes law elastic force occurs in the spring when the spring is being stretchedcompressed or deformed. A new hookes law experiment article pdf available in the physics teacher 401. Materials required a spring, a measuring ruler and weights.
In this experiment, i have been quite successful by proving the aim of the experiment which is hookes law. The spring constant can be determine by using the formula of hookes law. Mar 24, 20 this website and its content is subject to our terms and conditions. Hooke s law relates the stretching force and extension produced. Hookes law states that if the distortion of an elastic body is not too large, the force tending to restore the body to equilibrium is proportional to the displacement of the body from equilibrium. Hooke s law applies to the entirety of an object s elastic range. Hookes law and the force constant a hang the spring from the clamp with the large diameter coils down and hang a 50g mass from the spring.
The share my lesson science team has brought together a diverse range of free teaching resources for you to use in your classroom. Jan 16, 2015 simple demonstration of short gcse investigation into how the force applied to a spring affects the extension of the spring. Tes global ltd is registered in england company no 02017289 with its registered office. Dear readers, recently i had an opportunity to take part in the hookes law experiment. When a load f suspended from lower free end of a spring hanging from a rigid. Hookes law utk department of physics and astronomy. Hookes law is a principle of physics that states that the force f needed to extend or compress a spring by some distance x is proportional to that distance. The actual value and the theoretical value is not that far and only 1. Within the limit of proportionality, the extension of a material is proportional to the force applied 1 hookes law investigates the restorative force of the. The first one is when the object is in the so called linear behaviour and the second one plastic behaviour. However some elements do not experience the implications of hooke s law during the entirety of their elastic range. This is the hookes law experiment performed at qatar university in. Despite his crush on the beautiful woman, marks strict, catholic upbringing tells him that he must destroy.
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. It states that for a helical spring or any other elastic material, extension is directly proportional to the stretching force,provided elastic limit is not exceeded i. Hookes law, believe it or not, is a very important and widelyused law in physics and engineering. The chair in which you are sitting supplies the upward support force to keep you from falling by flexing according to hookes law until it can supply an upward support force equal to your. A formal lab report should include a title page like this one, with all of the appropriate. After completing the experiment, prepare a full report on the experiment and its results. 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. Friction and newtons laws college lab experiments pasco. In conclusion, it can be said that this experiment is successful and the results.
I was always interested in hookes law so this experiment will test to see if its true. Hookes law definition of hookes law by merriamwebster. Hookes law expt lesson plan template and teaching resources. Record the position with the 50 gram mass holder in the spreadsheet. This website and its content is subject to our terms and conditions. When a spring is stretched, the force exerted on it is proportional to its length. Once a sufficient amount of force has been applied, so as to extend the material beyond it.
We do this by assuming that there is a causeandeffect relationship among various physical quantities. Make sure you dont stretch the spring beyond the elasticity limits. Then click on the force sensor icon and press the \calibrate sensors button. The results of the experiment are shown in the table. Mean estimated potential elongation e, subjective centimeters of a spring of length l and diameter d plot. The lab report assistant is simply a summary of the experiments questions, diagrams if needed, and data. Hooke s law elastic force occurs in the spring when the spring is being stretchedcompressed or deformed. Add additional 50 gram masses to the mass holder and record the position of. Version 4202640001 lab report assistant this document is not meant to be a substitute for a formal laboratory report. At equilibrium, the spring is under two forces, the restoring force that proportional to the elongation, given by hookes law f r k l, and newtons second law, f. Hookes law lab report example download free essays. If a force f is applied to an elastic object such as a spring, the object will undergo a change in length. 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. Simple demonstration of short gcse investigation into how the force applied to a spring affects the extension of the spring.
Proportionality only holds up to a characteristic limit stress. Hooke s 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. A developed version of the hookes law, taking into account the considered reality concerning t he material stress both its own as well as caused by external loading, is the conclusion of th ese. Hookes law holds up to a maximum stress called the proportional limit. Researched and wrote papers on geometry, snowflakes, heat, astronomy, fossils, air pumps, light, watches, telescopes and silkwormsamong other things. This is the section in which you state the main results of the experiment and compare your results to the accepted or theoretical values if available by computing a percent discrepancy. Download scientific diagram the spreadsheet showing the results of the coulomb s law experiment, the needed calculations and data analysis. 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. Open or add a new excel worksheet and prepare it to record your new data by. 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. To collect the data, experiment needs to be performed using three different types of materials,material 1, material 2 and material 3.
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. Hooke s law states that if the distortion of an elastic body is not too large, the force tending to restore the body to equilibrium is proportional to the displacement of the body from equilibrium. The apparatus setup for the hookes law experiment 1 open the preset experiment le. Hookes law lab nathan venger experiment 11 hookes law. Record the cumulative stretch elongation for one spring. The vampires song when mark thompson goes across the bridge from texas into mexico for a night of fun, he has no idea that the sexy stripper who ends up on his lap is a vampire. Hookes law experiment hookes law experiment and analysis. Hookes law1 hookes law hookes law name barclay wagner. Hookes law was one of the few things he was popularly credited with creating. The estimates of the standard errors in the slope and intercept are. Hi fellow law students, i have uploaded lecture notes in pdf format containing the ebook notes for the subject law of evidence for llb and ba.
Hookes law is a scientific law which concerns itself with the elasticity of materials. We were examining the effect of exerting force on the specific. A definition of hooke s law is applied and investigated, looking at typical questions asked about the commonly assessed practical. The results obtained are slightly incorrect due to any errors as part of the experiment. The objective of this lab is to determine the resistance of several resistors by applying ohms law. Follow up lesson after completing practical lesson investigating forceextension.
Assemble report using a staple in the upper left corner. Hookes law hookes law name barclay wagner read the instructions and procedure from the manual pages 153 and 154. A spring is an elastic object that is used to store mechanical energy. The cognitive law expressed by equation 4 is formally identical to hookes law of elasticity.
Many materials obey this law as long as the load does not exceed the materials elastic limit. Slu physics hookes law department of physics revised. Lawrence university physics 151 slu physics hookes law department of physics revised. Perhaps the pogo stick was little robert hooke s favorite childhood toy, consisting of a stiff spring inserted in. Elastic force acts in the opposite direction of the external force. Aug 25, 2006 comprehensive powerpoint on hookes law with examples best for more able ks4 physics or post 16.
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