Question

Two persons of masses 55 kg and 65 kg respectively, are at the opposite ends of a boat. the length of the boat is 3.0 m and weight 100 kg. the 55 kg man walks up to the 65 kg man and sits with him. if the boat is in still water the centre of mass of the system shifts by

Answer 1

zero

As there is no net external force acting on the system.

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Answer 2

Answer:

The centre of mass of the system shifts by 0 m.

Explanation:

Let us consider the boat and the person sitting on it as single system. Now, it is given that the boat is in still water which means that no net external force is acting on the system.

So, the centre of mass remains fixed and it doesn't shift anywhere as the momentum remains conserved. Hence, the shift in the centre of mass is 0 m.

[Note; the question is very easy. The values are given just confuse the solver]

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