Question

When an elastic material with Young's modulus Y is
subjected to stretching stress S the elastic energy
stored per unit volume of the material is:​

Answer 1

The elastic energy stored per unit volume of the material is

s square by 2y

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