A pendulum consist of a wooden bob of mass $m$ and length $L .$ A bullet of mass $m_{1}$ is fired towards the pendulum with speed $v_{1}$ . The bullet comes out of the bob with speed $v_{1} /3$ , the pendulum just completes motion along vertical circle. The velocity $v_{1}$ is

\frac{3}{2} \frac{m}{m _{1}} 5 g ℓ

\frac{m}{m _{1}} 5 g ℓ

\frac{3}{2} \frac{m}{m _{1}} g ℓ

\frac{3}{2} \frac{m _{1}}{m} 5 g ℓ

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A pendulum consist of a wooden bob of mass

m

and length

L .

A bullet of mass

m_{1}

is fired towards the pendulum with speed

v_{1}

. The bullet comes out of the bob with speed

v_{1} /3

, the pendulum just completes motion along vertical circle. The velocity

v_{1}

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