Two blocks are connected by a string passing over a pulley as shown. Wedge is fixed. M is sliding down with speed 12 m/s at an instant and suddenly the string breaks. The coefficient of friction between the blocks and wedge is $\frac{1}{\sqrt{2}}$ . Find the velocity (in m/s) of block M with respect to m after t = 2 seconds from the moment the string breaks.  [Take $g=10m{s}^{–2}$  and  $\sqrt{\frac{3}{2}}=1.2$ . Assume that the length of incline is sufficiently long.]