A Simple Harmonic Oscillator (SHO) is a system that experiences periodic motion, where the restoring force is directly proportional to the displacement from its equilibrium position. Common examples include a mass attached to a spring or a pendulum swinging back and forth. The motion is characterized by a smooth, repetitive oscillation, typically described by sine or cosine functions. In an SHO, the key parameters are the mass, spring constant, and amplitude of oscillation. The time period, which is the time taken for one complete cycle, remains constant regardless of the amplitude, as long as the system is not damped or driven. This predictable behavior makes SHOs fundamental in physics and engineering.