A pendulum is pulled to one side until its mass is 15 cm above the reference point. After achieving the height, the pendulum is then released. Find the speed at the bottom of the swing.
At its highest point (Point A) the pendulum is momentarily motionless. All of the energy in the pendulum is gravitational potential energy and there is no kinetic energy. At the lowest point (Point D) the pendulum has its greatest speed.
