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Two particles A and B initially at rest, move towards each other under a mutual force of attraction. At the instant when the speed of A is v nd speed of B is 2v,the speed otlf the centre of mass of the system is?

Two particles A and B initially at rest, move towards each other under a mutual force of attraction. At the instant when the speed of A is v nd speed of B is 2v,the speed otlf the centre of mass of the system is?

Grade:12th pass

1 Answers

Arun
25750 Points
6 years ago
Initially both A and B were at rest. So momentum of centre of mass is 0. And it is given that there is no external force. Hence no change in momentum of centre of mass. And it will remain 0. As momentum(product of mass and velocity) is zero ans mass is not zero, velocity must be 0

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