Elastic Potential Energy Stored In A Stretched Wire

Elastic Potential Energy Stored In A Rod

A weight Mg is attached to the free end of a wire suspended from a rigid support. The wire is extended by l. The ratio of the elastic potential energy stored in the stretched wire to the work done by the weight Mg is

Determine the elastic potrntial energy stored in stretched wire.

Write down the expression for the elastic potential energy of a stretched wire.