Physics - Center of Mass Question with Solution | TestHub
PhysicsCenter of MassMotion of centre of massMedium2 minQB
PhysicsMediumsingle choice
Passage / Comprehension
A particle (P) of mass m is released from rest at point A on the curved surface of a wedge (Q) of mass M, free to move on a smooth horizontal surface. There is no information regarding the nature of the surface of the wedge. The speed of P w.r.t. Q when it reaches B is and the speed of Q at this instant is .
The centre of mass of system comprising of P and Q will be moving in which direction.
Options:
Answer:
B
Solution:
No external horizontal force acts on P + Q, so the CM's horizontal coordinate stays fixed; P descends, so the CM moves straight down.
Ans. (B)
Stream:JEESubject:PhysicsTopic:Center of MassSubtopic:Motion of centre of mass
⏱ 2mℹ️ Source: QB
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