Simple Harmonic Motion is a type of periodic motion or oscillatory motion under a retarding force which is proportional to the amount of displacement from an equilibrium position. SHM can serve as a mathematical model for a variety of motions, such as the oscillation of a spring. Given below is the Simple Harmonic Motion formula for the calculation of a simple harmonic motion in a physical system. SHM equation needs angular frequency for the calculation of velocity and acceleration.