Question

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

Answer 1

Answer in attachement⤴

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Answer 2

Answer:

S^2/ 2Y

Explanation:

Stress of material of wire = S

Young's Modulus of material of wire = Y

According to the formula, Young's modulus  is the ratio of stress and strain.

Then, Strain = S / Y

Energy stored in wire / volume = 1 / 2* stress * strain

                                                    = 1/2 * S * S/Y

                                                    = S² / 2Y