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Showing posts with the label Elasticity

Elastic hysteresis.

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The loop formed by loading and unloading the wire is called hysteresis loop.

Resilience.

Answer:- The resilience of an elastic body is its capacity to withstand a mechanical shock or a sudden blow without acquiring a permanent set.It is measured by the work done in subjecting the body to a strain within the elastic limit.

Elastic potential energy or strain energy ?

Answer:- The workdone or energy spent on the body by deforming force remains stored up in the body in the form of potential energy called elastic potential energy or strain energy.

Twisting torque on a cylinder.

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Answer:-

Shear strain.

Answer:- Shear strain is measured by angle turned by a line originally perpendicular to the fixed face.

Prove that σ=(3k-2η)/(6k+2η).

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Proof:-

Prove that η=Y/2(1+σ).

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Proof:-

Prove that K=Y/3(1-2σ).

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Answer:-

What is Poisson's ratio ?

Answer:- The ratio between the lateral strain and linear strain due to a given tensile or compressive stress, within the elastic limit is found to be a constant called Poisson's ratio for the material of the body.