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Two persons of masses 55 kg and 65 kg are at opposite ends of a boat. The length of boat is 3 m and weight 100 kg. The 55 kg man walks up to 65 kg man and sits with him. If the boat moves in still water, the centre of mass shifts by

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3 m

2.3 m

Zero

0.75m

answer is C.

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Centre of mass does not depend on internal Forces

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