A 5-g bullet is fired into a 1.3-kg pendulum of length 75 cm. The pendulum swings by 13 degrees. What was the initial speed of the bullet? (Practise how to derive an algebraic expression for the speed of the bullet before calculating the final result.)

Question

anonymous · Answer

The initial kinetic energy of the bullet it equal to the final potential energy of the bullet/pendulum combination

anonymous · Answer

I don know the final potential energy of the pendulum tho :/