Two persons of masses 55 kg and 65 kg respectively, are at the opposite ends of a boat. The length of the boat is 30 . m and weighs 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 center of mass of the system shift by:

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 30 . m and weighs 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 center of mass of the system shift by: (A) 3.0 m (B) 2.3 m (C) Zero (D) 0.75 m

Tardigrade Admin · Accepted Answer

As no external force acts on the system, therefore centre of mass will not shift.

Q. Two persons of masses 55kg and 65kg respectively, are at the opposite ends of a boat. The length of the boat is 30.m and weighs 100kg. The 55kg man walks up to the 65kg man and sits with him. If the boat is in still water the center of mass of the system shift by:

3.0 m

2.3 m

Zero

0.75 m

As no external force acts on the system, therefore centre of mass will not shift.

Q. Two persons of masses $55 k g$ and $65 k g$ respectively, are at the opposite ends of a boat. The length of the boat is $30 . m$ and weighs $100 k g$ . The $55 k g$ man walks up to the $65 k g$ man and sits with him. If the boat is in still water the center of mass of the system shift by: