In classical mechanics, a harmonic oscillator is a system which, when displaced from its equilibrium position, experiences a restoring force F proportional to the displacement x according to Hooke's law:
Angular frequency Amplitude Frequency Force RLC circuit Hooke's law Phase (waves) Oscillation Resonance Quantum harmonic oscillator Frequency response Damping Spring (device) Pendulum Potential energy Velocity Kinetic energy Friction Mechanical impedance Mass Pulsation Critical speed Transience Anharmonicity Total energy Parametric oscillator Newton's Second Law Homogeneous (mathematics) Linear response function Susceptance Spring constant Constant term Conductance Constant of integration Initial value problem Nondimensionalization Circular motion Linear differential equation LC circuit Superposition
