A 2.0 kg wood block hangs from the bottom of a 1.3 kg, 1.0-m-long rod. The block and rod form a pendulum that swings on a frictionless pivot at the top end of the rod. A 11 g bullet is fired into the block, where it sticks, causing the pendulum to swing out to a 33 degrees angle.

What was the speed of the bullet? You can treat the wood block as a particle.

How would I do this problem? Thanks!!