question_answer

Blocks shown in figure have equal masses m each. The system is released from rest with the spring unstretched. The string between A and ground is cut when there is maximum extension in the spring. The acceleration of centre of mass of the system of two blocks immediately after the string is cut is    

A) \[g\]                              

B) \[\frac{g}{2}\]

C) \[2g\]                            

D) Zero