A Forced Harmonic Oscillator is a system that experiences periodic driving forces, causing it to oscillate at a specific frequency. This type of oscillator can be found in various physical systems, such as a mass on a spring or an electrical circuit, where external energy is applied to maintain motion. The response of the oscillator depends on the relationship between the driving frequency and the natural frequency of the system. When the driving frequency matches the natural frequency, the system can experience resonance, leading to increased amplitude of oscillation. This phenomenon is crucial in many applications, including musical instruments and engineering designs, where controlled oscillations are necessary for optimal performance.