Question

Derive the expression for P.E stored per unit volume of a stretched wite?​

Answer 1

Answer:

The work done in stretching the wire by dl, dW = Fdl The total work done in stretching the wire from 0 to l is From Young’s modulus of elasticity Substituting equation (2) in equation (1), we get Since, l is the dummy variable in the integration, we can change l to l’ (not in limits), therefore Energy per unit volume is called energy density Read more on Sarthaks.com - https://www.sarthaks.com/909669/derive-an-expression-for-the-elastic-energy-stored-per-unit-volume-of-a-wire

Explanation:

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