A body of mass
m hangs by an inextensible string that passes over a smooth mass less pulley that is fitted with a light spring of stiffness
k as shown in the figure. If the body is released from rest and the spring is relaxed, find the maximum elongation of the spring.
![766622_dc5ed76d8ca74d5fac60c649491b05d9.png](https://search-static.byjusweb.com/question-images/toppr_invalid/questions/766622_dc5ed76d8ca74d5fac60c649491b05d9.png)