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Modulus of elasticity .

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A modulus of elasticity is defined as the ratio of the stress to the corresponding strain of a material obeying Hooke's law.
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Assertion: From the relation Y = (Fl)/(ADeltal) , we can say that, if length of a wire is doubled, its young's modulus of elasticity will also becomes two times. Reason : Modulus of elasticity is a material property.

Read each of the statement below carefully and state, with reasons, if it is true or false. (a) The modulus of elasticity of rubber is greater than that of steel. (b) the stretching of a coil is determined by its shear modulus.

A matallic wire is stretched by suspending weight to it. If alpha is the longitudinal strain and Y its Young's modulus of elasticity, shown that the elastic potential energy per unit volume is given by Y alpha^(2)//2

A metallic wire is stretched by suspending a weight of it. If alpha^(2) is the longitudinal strain and Y is its Young's modulus of elasticity, then slow that the elastic potential energy per unit volume is given by 1//2Y^(2) .

The teacher allows all the students of a class of perform the experiment to determine the Young's modulus of elasticity with the same experimental wire. It does not give correct result to the last student because of

Bulk Modulus|| Examples on Elasticity|| Intro to Calorimetry

Introduction OF elasticity||Cause OF elasticity||Stress & types OF stress||Strain||Young's modulus||Elastic potential energy

Introduction OF elasticity||Cause OF elasticity||Stress & types OF stress||Strain||Young's modulus||Elastic potential energy