Hookes law in the diagram below is shown a block attached to a spring. If a force is large enough a static object which is anchored will eventually crack and possibly fail completely. It is clearly laidout with various possible means to enhance the learning experience, including practice questions with. Hooke s law is often illustrated with springs, but many objects abide by this law as long as the force applied does not surpass the materials elastic limit.
Im studying hookes law in physics and there is something i cant understand. Reading lists book lists books to read my books psychology books books for teens film books study motivation what to read. In mechanics physics, hookes law is an approximation of the response of elastic i. Notes and questions on hookes law and stretching of different materials. As you read about newtons laws, keplers laws, hookes law, ohms law, and others, youll appreciate the for dummies law. A graph of force f versus elongation x shown in the figure below. 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. Hooke s law states that the extension or deformation of an object is proportional to the load applied to it. The figure below shows the stressstrain curve for low carbon steel.
Hookes law experiment hookes law experiment and analysis. Apr, 2016 notes and questions on hooke s law and stretching of different materials. As physics mechanics 2 quick question on hooke s law show 10 more is it still hooke s law if the gradient is a curved line. Learn how to carry out an experiment to investigate hooke s law. Teacher notes hookes law program robert hooke 16351703. A revision guide designed to assist preparation for gcse examinations in physics.
Whether youre taking a class, helping kids with homework, or. The cognitive law expressed by equation 4 is formally identical to hookes law of elasticity. Extension happens when an object increases in length and compression happens when it decreases in length. Jan 26, 20 im studying hooke s law in physics and there is something i cant understand. The widespread applications in various fields makes it an important material behaviour. Hooke s law is a principle of physics that states that the that the force needed to extend or compress a spring by some distance is proportional to that distance.
Pearson edexcel international gcse p52400a p52400a02 2018 pearson education ltd. This follows hookes law which states that the extension of an elastic object like a. The force is directly proportional to the extension, to get double the extension the force applied is doubled also. Hookes law forces and elasticity aqa gcse combined. Hookes law holds up to a maximum stress called the proportional limit. Physics for you, has been updated inline with the revised national curriculum requirements. Book club our original story books, printed and delivered to your door. Book contridictions as physics a level, check on my ans from question, no mark scheme at textbook gcse physics. A new hookes law experiment article pdf available in the physics teacher 401. In position b a force f is used to compress the spring by a length equal to. Elastic potential energy and hookes law springs ap physics. Click here to buy physics books for your gcse or a level and support gorillaphysics.
Dear year 9 and 10 physics learners i have attached the notes, revision questions and answers on hookes law and moments. Physics revisiongcse physicsgeneral biologyengineering. Start studying igcse physics forces and hookes law. Define hooke s law provided the elastic limit has not been exceeded, the extension is directly proportional to the load. I have also attached the test questions and answers please study it thoroughly. 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. Mouseover hooke s law on the first screen brings up the definition 2. The elastic limit of a material is the furthest point it can be stretched or deformed while being able to. This law is only true if the elastic limit of the object has not been reached. The easier we make it, the faster people understand it and the more they enjoy it. Learn about and revise shapechanging forces, elasticity and the energy stored in springs with gcse bitesize physics. Teacher notes hookes law program robert hooke 1635. E is the modulus of elasticity also known as youngs modulus.
Gcse physics required practical 6 hookes law teaching. 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. The way in which an object deforms depends on its dimensions, the material it is made of, the size of the force and direction of the force. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Hooke s law states that the force f exerted by a spring is proportional and in the opposite direction to the displacement x of the end of the spring. Hookes law is a principle of physics that states that the that the force needed to extend or compress a spring by some distance is proportional to that distance. When the stress is removed from the material, there are two types of deformation that can take place. Hooke s law aqa p2 paper question 1 walking talking mock gcse physics revision simple question on hooke s law, which states that force is proportional to extention.
What would the extension be if there was a 6n load. Physics and astronomy labshookes law and youngs modulus. How to calculate a spring constant using hookes law dummies. Use the program to fill in the values nb hooke s law no longer obeyed. Applications of a recurring principle article pdf available in ajp advances in physiology education 334. If the spring obeys hookes law, what does it tell you about the.
Stretching springs, equilibrium and balanced forces, restoring force, practical, graph and gradient, and the limit of proportionality. Laws in gcse physics gcse gorillaphysics gcse and a level. Igcsephysics forces and hookes law flashcards quizlet. This is a simple lab that can be done in almost any school. Hookes law boundless physics simple book production.
Mar 05, 2018 for the love of physics walter lewin may 16, 2011 duration. F which represents force, k which is called the spring constant and measures how stiff and strong the spring is, and x is the distance the spring is stretched or compressed away from its equilibrium or rest position. Hooke s law simply states that the extension of a spring or other stretch object is directly proportional to the force acting on it. Explain why more than one force is required to change the shape of an object. A spring is 20 cm long when a load of 10 n is hanging from it, and 30 cm long when a load of 20 n is hanging from it. For the love of physics walter lewin may 16, 2011 duration. Its about springs coil springs the kind of spring found in a cars suspension or a retractable pen, the kind that look like a pigs tail or a lock of curly hair. This resource is designed for use with cambridge igcse physics, but could be used with any physics course. Isaac physics a project designed to offer support and activities in physics problem solving to teachers and students from gcse y11, through to university.
Hookes law deals with a basic concept in physics elasticity. 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. If a spring is stretched past its elastic limit then it wont be able to return to its original length once the load has been removed and hookes law is no longer correct. Physics lessons gcse physics chemistry lessons physics classroom aqa. Mouseover hookes law on the first screen brings up the definition 2. Hookes law questions ocr physics a g481 2015 unofficial markscheme. Draw a graph to work out the length of the spring when. Hookes law simply states that the extension of a spring or other stretch object is directly proportional to the force acting on it. Under these conditions the object returns to its original shape and size upon removal. Coil springs are also known as helical springs since the mathematical name for this kind of shape is a helix. Thanks to this book, you dont have to be einstein to understand physics. Force vs extension in depth master hookes law for gcse physics. Hookes law states that the force needed to stretch the elastic material is proportional to the extension of the material.
The extension of an elastic object, such as a spring, is described by hooke s law. Hookes law states that the extension or deformation of an object is proportional to the load applied to it. Gcse physics show 10 more would i be able to handle physics a level if i get these grades. Hooke s law youtube dna and chromosomes image search results kids class 4 kids science for kids life science dna facts down syndrome dna test the cell dna. Forces hookes law secondary resources physics forces. Hookes law forces and elasticity edexcel gcse physics. This shows that force is proportional to extension. Oct 10, 2014 dear year 9 and 10 physics learners i have attached the notes, revision questions and answers on hooke s law and moments. This resource is designed for use with cambridge igcse physics. 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. The most popular series for gcse has been updated to offer comprehensive coverage of the revised gcse specifications. As physics mechanics 2 quick question on hookes law show 10 more is it still hookes law if the gradient is a curved line.
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. Hooke s law questions ocr physics a g481 2015 unofficial markscheme. Physics, chemistry and biology planning and teaching materials for secondary. The correlation can be expressed linearly and can be demonstrated with the use of graphs as shown below figure 1. Gorillaphysics, gcse physics revison, a level physics revision, exam practice, experiments. Here f is the restoring force or the force exerted by the spring on the external agent and k is a. Hookes law and moments revision year 1 igcse physics. Hookes law is often illustrated with springs, but many objects abide by this law as long as the force applied does not surpass the materials elastic limit.
Hookes law only applies if you do not stretch a spring too far. Fill in the boxes at the top of this page with your name, centre number and candidate number. The spring extended 5 mm each time a 10 g mass is added which increased the force due to gravity by 0. Use the program to fill in the values nb hookes law no longer obeyed. If youre behind a web filter, please make sure that the domains. In position a the spring is at rest and no external force acts on the block. If you measure how a spring stretches extends its length as you apply increasing force and plot extension e against force f. The constant of proportionality k is called the spring constant. Isaac physics a project designed to offer support and activities in physics problem solving to teachers and students from gcse level through to university. How do the results prove that the spring obeys hookes law. Investigating hookes law forces ks3 physics revision. Hookes law, examples with solutions physics problems with.
Hookes law is only correct if the elastic limit, which is the limit of proportionality, is not exceeded. Hookes law aqa p2 paper question 1 walking talking mock gcse physics revision simple question on hookes law, which states that force is proportional. If youre seeing this message, it means were having trouble loading external resources on our website. Buy my book to help you memorise all the equations for gcse physics or combined science, for aqa, ocr a and b, edexcel and eduqas. All of edexcel igcse physics 91 paper 2 2020 igcse physics revision science with hazel duration. Designed by expert teachers at save my exams for the edexcel igcse 91 physics syllabus. In other words force is proportional to the extension of stretched material. Sep 04, 2016 stretching springs, equilibrium and balanced forces, restoring force, practical, graph and gradient, and the limit of proportionality. The hallway was used to stretch out approximately 100 ft 30 m of string.
Add arrows to show the force acting on the objects as they are compressed, stretched and bent compressed stretched bent 2. Kind regards mr ronesh moments and forces test moments and forces test answers notes on hookes law. For instance, the spring is pulled downwards with either no load, f p, or twice f p. Define hookes law provided the elastic limit has not been exceeded, the extension is directly proportional to the load.
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