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A block of mass m is placed at rest on a...

A block of mass `m` is placed at rest on a smooth wedge of mass M placed at rest on a smooth horizontal surface. As the system is released

A

The COM of the system remains stationary

B

The COM of the system has an acceleration g vertically downward

C

Momentum of the system is conserved along the horizontal direction

D

Acceleration of COM is vertically downward (a < g)

Text Solution

Verified by Experts

The correct Answer is:
C, D
Out of two blocks, one block of mass `m` is moving in vertical direction also (downwards). Therefore COM is moving vertically downwards and momentum of the system is not conserved in vertical direction.
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