Two Identical Masses Are Hung on Strings of the Same

Multiple Choice

Two identical masses are hung on strings of the same length. One mass is released from a height h above its free-hanging position and strikes the second mass; the two stick together and move off. They rise to a height H given by

A) 3h/4
B) h/4
C) h/2
D) h
E) None of these is correct.