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

Q. A pendulum consists of a wooden bob of mass and length . A bullet of mass is fired towards the pendulum with a speed . The bullet emerges out with a velocity and the bob just completes the motion along a vertical circle. Then is

System of Particles and Rotational Motion Report Error

Solution:

The speed acquired by bob after bullet comes out is

By conservation of linear momentum, we have


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