A ball with mass 28g is attached to at string with a length of 30cm such that it creates a pendulum. The other end of the string is attached to a stable linear surface. The ball is then pulled back as far as it can go and the string is still taunt. The ball is then released. Create a energy diagram for the ball as it swings from it's starting position to: the lowest point in the swing, half-way between the bottom and the top on the other side, and completely up on the other side. Ignore air resistance.