Question

47.Two persons A and B of weight 80 kg and 50 kg respectively are standing at opposite ends of a boat of mass 70 kg
and length 2m at rest. When they interchange their positions then displacement of the centre of mass of the boat will be:
(A) 60 cm towards left
(B) 30 cm towards right
(C) 30 cm towards left
(D) stationary

Answer 1

Answer:

Initially centre of mass is at rest.

There is no external force on the system and hence no acceleration is produced.

So, centre of mass remains at rest .