Circular Motion

A pendulum of length 2 m consists of a wooden bob of mass 50 g. A bullet of mass 75 g is fired towards the stationary bob with a speed v. The bullet emerges out of the bob with a speed \({v \over 3}\) and the bob just completes the vertical circle. The value of v is ___________ ms^\(-\)1. (if g = 10 m/s²).