what is oscillatory motion

Oscillatory motion is a type of motion that repeats itself. An object oscillates about a fixed equilibrium position due to the presence of torque or restoring force. The torque or force works to return the system towards its equilibrium position regardless of the direction in which the system has been displaced. Oscillatory motion is defined as the to and fro motion of an object from its mean position. It is a type of periodic motion. A common example of periodic motion is the motion of hands on a clock or the motion of planets around the sun. Examples of oscillatory motion include the swinging of a pendulum and the vibrating of strings on a musical instrument. Objects that undergo a repetitive motion back and forth around an equilibrium position are called oscillators.