Question

Select One Option Correct from the following : An ideal spring with spring constant k is hung from the ceiling and a block of mass M is attached to its lower end. The mass is released with the spring initially unstretched. Then the maximum extension in the spring is
(A)$\frac{4Mg}{k}$
(B)$\frac{2Mg}{k}$
(C)$\frac{Mg}{k}$
(D)$\frac{Mg}{2k}$

Answer 1

b option is correct I think