In the given arrangement of a doubly inclined plane two blocks of...

In the given arrangement of a doubly inclined plane two blocks of masses $M$ and $m$ are placed. The blocks are connected by a light string passing over an ideal pulley as shown. The coefficient of friction between the surface of the plane and the blocks is $0 . 25$. The value of $m$, for which $M = 10kg$ will move down with an acceleration of $2m{s}^{- 2}$, is: (take $g = 10m{s}^{- 2}$ and $\tan 37 ° = \dfrac{3}{4}$)