Physics Course/Oscillation/Oscillation of Swinging Side by Side

When there is a force acting on a pendulum. The pendulum will swing from side to side for a certain period of time. This type of movement is called oscillation
 * Simple_pendulum_height.svg
 * $$m g = -l y$$
 * $$y = \frac{m g}{l}= v t$$
 * $$t =\frac{m g}{l v}$$