A block of mass 2 kg is kept on a smooth wedge of mass 3 kg and wedge is kept on a rough horizontal surface. A vertical force of 60 N is applied on the minimum coefficient of friction between the wedge and horizontal surface, so that wedge remains at rest during the motion of block on the wedge ?

Options

A. `2//7`
B. `4//7`
C. `6//7`
D. `2//5`

Answer

D