In the figure shown, stiffness of spring is k and mass of the block is m. The pulley is fixed. Initially the spring is relaxed. Now the system is released from rest. The
maximum elongation in the spring is
A body of mass m hangs by an inextensible string that passes over a smooth massless pulley that is fitted with a light spring of stiffness k as shown in the figure, such that the spring is initially at natural length. If the body is released from rest and the spring is released, calculate the maximum elongation of the spring.