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JEE Main 2005 (AIEEE) · Elastic Potential Energy

Elastic Potential Energy question from JEE Main 2005 (AIEEE)

Q14JEE Main 2005 · AIEEEEasy

Elastic Potential Energy

If $S$ is stress and $Y$ is young's modulus of material of a wire, the energy stored in the wire per unit volume is

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Answer: (a)

$u = \dfrac{1}{2} \times \text{stress} \times \text{strain}$ , with strain $= S/Y$ .
$u = \dfrac{S^2}{2Y}$
So the answer is (a).

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