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Sahay Sir > Question Answers > Cengage JEE Mains Physics by B.M Sharma > Chapter 8 - COM, Momentum and Collision > A pendulum consists of a wooden bob of mass m and of length l. A bullet of mass m1​ is fired towards the pendulum with a speed v1​. The bullet emerges out of the bob with a speed v1​/3 and the bob just completes motion along a vertical circle. Then v1​ is :

A pendulum consists of a wooden bob of mass m and of length l. A bullet of mass m1​ is fired towards the pendulum with a speed v1​. The bullet emerges out of the bob with a speed v1​/3 and the bob just completes motion along a vertical circle. Then v1​ is :

A mass m1 moves with a great velocity. It strikes another mass m2 at rest in head on collision. It comes back along its path with low speed after collision. Then