Question

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

Answer 1

Explanation:

potential energy stored

Answer 2

Explanation:

Given,

Young's modulus =Y,

Streaching stress=S,

Energy stored per unit volume is, = 1/2

× stress × strian

We know that, stress = strain ×Y

Therefore energy per unit volume will be E= 1/2×S×S/y=S²/2y