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Two boys Ram and Shyam, are standing on a frictionless surface. Ram (mass $80 k g$ ) pushes Shyam (mass $50 k g$ ).

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The centre of mass of both boys remains at rest.

After some time, Shyam has moved more distance than Ram.

Shyam exerts same force on Ram as exerted by Ram on him.

Ram remains at rest but Shyam accelerates.

answer is A, B, D.

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Detailed Solution

On frictionless surface , external force acting on the system is zero. So displacement of centre of mass is zero. Therefore

80 $x_{r} + 50 x_{s} = 0 . H e n c e x_{s} > x_{r} .$

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