A pulley fixed to the ceiling carries a string with blocks of masses m and 3 m attached to its ends. The masses of string and pulley are negligible. When the system is released the acceleration of centre of mass will be

A pulley fixed to the ceiling carries a string with blocks of masses m

1.	A pulley fixed to the ceiling carries a string with blocks of masses m and 3 m attached to its ends. The masses of string and pulley are negligible. When the system is released the acceleration of centre of mass will be
Answer» ZERO `-(G)/(4)` `(g)/(2)` `-(g)/(2)` Answer :C