A massless inelastic thread passes over a small frictionless pulley. Two identical blocks A and B of mass m = 2kg are attached with the thread. The system is initially at rest. A bullet C also of mass m strikes the block A from below with initial speed u as shown in figure and gets embedded in block A at t = 0 second. Then: a) Find the velocity of centre of mass system (block A plus bullet C and block B) Just after cxzollision. b) Time after which the string becomes taut again.

A massless inelastic thread passes over a small frictionless pulley. T

1.	A massless inelastic thread passes over a small frictionless pulley. Two identical blocks A and B of mass m = 2kg are attached with the thread. The system is initially at rest. A bullet C also of mass m strikes the block A from below with initial speed u as shown in figure and gets embedded in block A at t = 0 second. Then: a) Find the velocity of centre of mass system (block A plus bullet C and block B) Just after cxzollision. b) Time after which the string becomes taut again.
Answer» ANSWER :`U/3, u/(2G)`