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JEE Main & Advanced Physics Rotational Motion Question Bank Mock Test - Centre of Mass, Conservation of Linear Momentum and Collisions

  • question_answer
    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

    A) remains unchanged

    B)  change along the horizontal

    C)  will move up in the vertical direction

    D)  will move down in the vertical direction and changes along the horizontal

    Correct Answer: C

    Solution :

    [c] 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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