Question

16. When a force is applied at one end of an
elastic wire it produces a strain'' in the
wire if 'Y' is the Y.M of wire, the amount
of energy stored per unit volume of the
wire is given by
a) yx e
b) (yxe)
a) }(yx8)
c) yxe​

Answer 1

Answer:

Energy stored in the wire per unit volume = U  = (1/2)*Stress*Strain

Also, Strain= (Stress /Y)

Therefore,

On substituting The expression for Strain in the first equation:

U = $\frac{S^{2} }{2Y}$

Explanation: