A mass m is rest on an inclined plane of mass M which is further resting on a smooth horizontal plane. Now if the mass starts moving the position of C.M. of mass of system will:

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remain unchanged

change along the horizontal

move up in the vertical direction

move down in the vertical direction the vertical along the horizontal

answer is C.

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Detailed Solution

The mass move under the influence of gravitational pull which acts along the vertical. Thus CM changes along vertical while it remains unchanged in the horizontal direction.

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