Question

What does harmonic oscillator mean? In your own words.

Answer 1

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it is periodic as well as oscillatory motion in simple harmonic motion the acceleration of the particle is always proportional to the displacement of the equilibrium position and its directed opposite to the displacement

Answer 2

A periodic motion (as of a sounding violin string or swinging pendulum) that has a single frequency or amplitude or is composed of two or more such simple periodic motions.