Lesson plan and presentation that covers forces and elasticity for gcse physics. The responsiveness or sensitivity of consumers to a change in price. Our new crystalgraphics chart and diagram slides for powerpoint is a collection of over impressively designed datadriven chart and editable diagram s guaranteed to impress any audience. The elasticity of the strap determines the amplitude of the resulting vibrations. Elasticity, stress and strain and stressstrain curve, class. Lifshitz theory of elasticity volume 7 of a course of theoretical physics pergamon press 1970. These forces are electrical in nature and these are active if the distance between the two. Elasticity, stress and strain and stressstrain curve. Elasticity is objects property that causes it to be restored to its original shape after distortion. The coefficient that relates a particular type of stress to the strain that results is called an elastic modulus plural, moduli. The property of a body, by virtue of which body regains its original size and shape when the applied force is removed, is known as elasticity and the body is known as elastic body.
The lesson includes all the key theory behind the concept of elasticity, the difference between elastic and inelastic goods and how to calculate price elasticity of demand. This physics video tutorial provides a basic introduction into elasticity and hookes law. Demonstrate your understanding of elasticity, elastic limit, stress, strain, and. If the deformation, or strain the ratio of the change in length to the initial length, is. Lecture 20 elasticity and oscillations todays lecture will cover textbook chapter 10. Solid objects will deform when adequate forces are applied to them. Strain constant e stress e is a constant of proportionality, or modulus of elasticity or coefficient of elasticity robert hook units. This document is highly rated by class 12 students and has been viewed 1183 times. After completion of this ppt, you should be able to. It is the percentage change in quantity demanded given a percentage change in price. Elasticity is the ability of an object or material to resume its normal shape after being stretched or compressed. Sep 05, 2017 this firstyear, graduatelevel text and reference book covers the fundamental concepts and twentyfirstcentury applications of six major areas of classical physics that every masters or phdlevel physicist should be exposed to, but often isnt. For elastic demand, apply the negative relation between price.
Elasticity is the property of solid materials to return to their original shape and size after the forces deforming them have been removed. These are the slides i created for physics 1425 physics i for engineers in the spring of 2010. Or in other words, its the stretchiness of a material or object. Jun 22, 2017 lesson plan and presentation that covers forces and elasticity for gcse physics. Real rigid bodies are elastic we can slightly change their dimensions by pulling, pushing, twisting or compressing them. Elasticity in physics translation in hindi, kannada. Ppt elasticity powerpoint presentation free to download. Chapter 12 static equilibrium and elasticity lecture 1. Elasticities can be estimated for price, income, prices of related products, and advertising expenditures. Consider the gaussian statistics for the distribution of end to end distances. Tippens, professor of physics southern polytechnic state. Review energy in shm a mass is attached to a spring and set to motion. Elasticity 3 uniform compression demonstration if the forces are applied uniformly in all directions, we have a deformation typified by that produced by a uniform hydrostatic pressure. It introduces the concept of proportionality and the foundations of.
It introduces the concept of proportionality and the foundations of hookes law ready for the required practical. Elastic deformations hookes law stress and strain shear deformations volume. Describe the application of income elasticity, crossprice elasticity. Theincome elasticity of demand, and the crossprice elasticityof demand. Sep 24, 2017 may 11, 2020 elasticity, stress and strain and stressstrain curve, class 11, physics edurev notes is made by best teachers of class 11. Elasticity solved examplesproblems physicscatalyst. Bungee jumping utilizes a long elastic strap which stretches until it reaches a maximum length that is proportional to the weight of the jumper.
Elasticity the following questions practice these skills. Elasticity 1 chapter 3 elasticity chapter summary the elasticity of demand measures the responsiveness of demand to changes in a factor that affects demand. To a greater or lesser extent, most solid materials exhibit elastic behaviour, but there. Elasticity in physics, elasticity property by which an object that changes in shape and size under the action of an applied force and recovers its original shape when the force is removed.
Introduce the relationship between ownprice elasticity and total revenue when there is a price change for an elastic and inelastic item. It is defined as the ratio of tangential stress to the shearing strain, within the elastic limit. Entropic elasticity hg hi atyticitsael forces limits of ideal chain. Stress is related to the force causing the deformation strain is a measure of the degree of deformation the elastic modulus is the constant of proportionality between stress and strain for sufficiently small stresses, the stress is directly proportional to the strain the constant of proportionality depends on the material being deformed and the nature of the.
The content of this engineering physics i and engineering physics ii provide necessary basic ideas and concepts in a bright manner. Microsoft powerpoint chapter15 compatibility mode author. Its unit is nm 2 or pascal and its dimensional formula is ml 1 t 2. Discuss the intuitive determinants of price elasticity. Elasticity 5 as the stress was further increased, a point y, known as the yield point, at which the stress rapidly dropped, was reached. Elasticity is the ability of materials to return to their original shape after a deforming stretching, compressing, shearing, bending force has been removed. After a region k to l of partial elastic behaviour, plastic flow continued from l to m.
Chapter 12 static equilibrium and elasticity lecture 1 conditions for static equilibrium center of gravity equilibrium in an accelerated frame april, 2009 410 physics 201, spring 2010, u. A body with this ability is said to behave or respond elastically. Elasticity and hookes law ppt free download as powerpoint presentation. May 11, 2020 elasticity, stress and strain and stressstrain curve, class 11, physics edurev notes is made by best teachers of class 11. Apr 22, 2019 it is defined as the ratio of tangential stress to the shearing strain, within the elastic limit. Jie li pdf presentation video 4 elasticity of mantle minerals. Theory, applications and numerics provides a concise and organized presentation and development of the theory of elasticity, moving from solution methodologies, formulations and strategies into applications of contemporary interest, including fracture mechanics, anisotropiccomposite materials. Elastic materials have internal forces which restore the size and shape of the object when the stress is removed. The forces between the atoms due to electrostatic interaction between the charges of the atoms are called interatomic forces.
If the material is elastic, the object will return to its initial shape and size when these forces are removed. Bob liebermann pdf presentation transparencies video 5 transport properties mass and heat. Introduction to polymer physics lecture 1 boulder summer school july august 3, 2012 a. The modulus of elasticity youngs modulus e is a material property, that describes its stiffness and is therefore one of the most important properties of solid. The experiments to be performed by the student in i and ii semester engineering. This longitudinal modulus of elasticity is called youngs modulus. Recall hookes law first stated formally by robert hooke in the true theory of elasticity or springiness 1676 which can be translated literally into as extension, so force. Identify elastic and inelastic demand according to the price elasticity of demand. Thus, the sensitiveness or responsiveness of demand to change in price is as called elasticity of demand 4. Categories of price elasticity of demand inelastic demand a change in price has very little effect on the quantity demanded 1 4. When the elasticity is infinite, the supply is perfectly elastic and is a horizontal line. Cross price elasticity definition substitutes and complements 4. Because firms often have a maximum capacity for production, the elasticity of. In mechanics, and physics hookes law of elasticity is an approximation that.
Elasticity and hookes law ppt elasticity physics materials. This document is highly rated by class 11 students and has been viewed 16082 times. Object is considered more elastic, if it restores back to the original configuration in a much better form. Real objects are not rigid but can deform under the influence of an external force. In such cases, there is a bulk modulus b of elasticity. Modern classical physics pdf download free pdf books. Volume stress f a b volume strain v v the bulk modulus is negative because of decrease in v. Real life applications and practical examples are included in this text wherever required. Theory, applications and numerics provides a concise and organized presentation and development of the theory of elasticity, moving from solution methodologies, formulations and strategies into applications of contemporary interest, including fracture. Elastic demand e lasticity of demand is an important variation on the concept of demand. Kinds of price elasticity of demand perfectly elastic demand. Abby kavner and jie li pdf presentation li pdf presentation kavner video. Elasticity branch of physics that describes how real bodies deform when forces are applied to them.
Ppt physics i class 11 powerpoint presentation free to. Elasticity of demand, class 12, microeconomics class. This firstyear, graduatelevel text and reference book covers the fundamental concepts and twentyfirstcentury applications of six major areas of classical physics that every masters or phdlevel physicist should be exposed to, but often isnt. When the elasticity is equal to zero, the supply is perfectly inelastic and is a vertical line. Stress nine quantities are required to define the state of stress at a point. Ppt elastic properties of solids powerpoint presentation, free. The lesson also looks at elastic and inelastic demand curves.
Pa this longitudinal modulus of elasticity is called youngs modulus and is denoted by the symbol. A block of gelatin is 60 mm by 60 mm by 20 mm when unstressed. The block is placed such that 60x60 comes on the lower and upper surface. Lecture 7 elasticity 1 physics 460 f 2006 lect 7 1 elasticity stress and strain in crystals kittel ch 3 physics 460 f 2006 lect 7 2 elastic behavior is the fundamental distinction between solids and liquids similartity. The bulk modulus is negative because of decrease in v.
Elasticity, ability of a deformed material body to return to its original shape and size when the forces causing the deformation are removed. Assume local and macroscopic deformations are the same affine deformation. Demand can be classified as elastic, inelastic or unitary. Compressibility of a material is the reciprocal of its bulk modulus of elasticity. The material factor is called youngs modulus, and it has been measured for many materials.
Physics 3 summer 1989 lab 7 elasticity theory all materials deform to some extent when subjected to a stress a force per unit area. Elasticity of demand, class 12, microeconomics class 12 notes edurev is made by best teachers of class 12. Definition of price elasticity of demand the change in the quantity demanded of a product due to a change in its price is known as price elasticity of demand. M 1 l 1 t 2 hookes law is obeyed only if the deformation is within the elastic limit. A great lesson that teaches prices elasticity of demand ped. Covers forces and elasticit, including explanation of hookes law and an experiment to. Find the shearing stress, shearing strain and shear modulus.
Elasticity of demand, class 12, microeconomics class 12. The change in length of a stretched object depends not only on the applied force, but also on its length and crosssectional area, and the material from which it is made. They were supplemented with some clicker questions supplied with the textbook giancoli, but most of the slides used are here in pdf format. The basic idea behind hookes law is that the change in. Write the pressure as p, the original volume as v and the change in volume as dv.
These forces are electrical in nature and these are active if the distance between the two atoms is of the order of atomic size i. A free powerpoint ppt presentation displayed as a flash slide show on id. Chart and diagram slides for powerpoint beautifully designed chart and diagram s for powerpoint with visually stunning graphics and animation effects. Use the midpoint method for calculating percent change.
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