Physics - Center of Mass Question with Solution | TestHub

In the shown arrangement all surfaces are smooth and system is released from rest. Mass of block A and B are equal ( $m=1\mathrm{kg}$ ), mass of block $C$ is$M=3\mathrm{kg}$. After releasing from rest block $B$ strikes with the surfaces of C after travelling height $\mathrm{h}=10\mathrm{cm}$. Find the displacement (in cm ) of the block C , just before, the B strikes to C .