Question

A stick of length L and mass M lies on a frictionless horizontal surface on which it is free to move in any way. A ball of mass m moving with speed V collides elastically with the stick as shown in fig below. If after the collision, the ball comes to rest, then what should be the mass of the ball?

• A. $m=2M$
• B. $m=M$
• C. $m=\frac M2$
• D. $m=\frac M4$

Answer 1

Answer: (D)

$m=\frac M4$

Answer 2

The correct option is (D): $m=\frac M4$.