JEE Main 2022 · 27 Jun · Shift 1, Physics question 60

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 $\dfrac v3$ and the bob just completes the vertical circle. The value of $v$ is ______ ms$^{-1}$. (if $g=10$ m/s$^2$).