A stick of length \( L \) and mass \( M \) lies on a frictionless horizontal surface on which it...

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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 figure-5.115. If after the collision ball comes to rest, then what should be the mass of the ball ?
Figure \( 5.115 \)
(A) \( m=2 M \)
(B) \( m=M \)
(C) \( m=M / 2 \)
(D) \( m=M / 4 \)
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