Two identical blocks having mass M each are smoothly conjugated and placed on a smooth horizontal floor as shown in figure. On the left of block $A$ there is a wall. A small block of mass $m$ is released from the position. Then velocity of block B is maximum

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Horizontal momentum of (m + A + B) is conserved (wall only acts while A is in contact). Block B gains rightward momentum whenever m moves leftward relative to it; B's velocity is maximum when m is at the lowest point of its path on B and moving towards the left w.r.t. B.

Ans. (B)

Physics - Center of Mass Question with Solution | TestHub

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