The simple harmonic motion (SHM) is an oscillatory movement around one point of equilibrium. A oscillation is an oscillation that is back and forth and equilibrium is the condition that a system could exist in. In equilibrium, the forces acting on the system are balanced while the whole system remains in equilibrium.

The SHM meaning is graphically expressed as a wave mathematically, the wave is described using combinations of cosine and sine functions. You can explain the SHM through the structure of waves. A wave’s frequency is usually measured in seconds, and is an indication of the number of complete cycles of the wave happen in a second. The length, or duration of the wave is a measure of the length is required to go through one cycle of a wave and also the amplitude of the wave is the measurement of the distance from equilibrium the wave can travel.