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Q.

A cart of mass M is tied by one end of a massless rope of length 10 m. The other end of the rope is in the hands of a man of mass M. The entire system is on a smooth horizontal surface. The man is at x = 0 and the cart at x = 10 m. If the man pulls the cart by the rope, the man and the cart will meet at the point

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a

x=0

b

x=5m

c

x=10m

d

They will never meet

answer is B.

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Detailed Solution

In the absence of external force, position of centre of mass remain same therefore they will meet at their centre of mass

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