A boat of 90 kg is floating in still water. A boy of mass 30kg walks from the stern to the bow. The length of the bow is 3 m. Find the distance through which the boat will move

Answers (1)

Let m be the mass of boy and M be the mass of boat

By using conservation of COM.

distance moved by boat, x = (m/(m+M))d

x = (30/120)3 = 3/4 = 0.75m

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