Two masses M and `m(M gt m)` are joined by a light string passing over a smooth light pulley.

Options

A. The acceleration of each block is `((M-m)/(M+m))g`
B. The tension in the string is `(2Mmg)/(M+m)`
C. The centre of mass of the 'M plus m' system moves down with an acceleration of `g((M-m)/(M+m))^(2)`
D. The tension in the string by which the pulley is attached to the rodd is `(M +m)g`

Answer

A, B, C