JEE Main & Advanced
Sample Paper
JEE Main - Mock Test - 10
question_answer
Two elastic balls are suspended at the same height, one has mass \[{{m}_{1}}=0.2\,kg\] and other has mass \[{{m}_{2}}\]. If the system is left alone into the position as shown in figure, we find that after an elastic head on collision both balls rise to the same height. What is the mass of the other ball in (kg)?