In the system shown in figure, mass m is released from rest from position A. Potential energy of m at point A with respect to point B is E. Volume of m is negligible and all surfaces are smooth. When mass m reaches at point B.

In the system shown in figure, mass m is released from rest from posit

1.	In the system shown in figure, mass m is released from rest from position A. Potential energy of m at point A with respect to point B is E. Volume of m is negligible and all surfaces are smooth. When mass m reaches at point B.
Answer» <P> ANSWER :(A) Q, (B) P, (C ) R, (D) R