A spring block system is placed on a rough horizontal floor. The block is pulled towards right to give spring an eleongation less than `(2 mu mg)/(K)` but more than `(mu mg)/(K)` and released.

The correct statement is :

Options

A. The block will cross the mean position
B. The block will come to rest when the forces acting · on it are exactly balanced
C. The block will come to rest when the work done by friction becomes equal to the change in energy stored in spring
D. None

Answer

C