Meaning of simple harmonic motion

sim'ple harmon'ic mo'tion

Pronunciation: [key]
— Physics. Physics.
  1. vibratory motion in a system in which the restoring force is proportional to the displacement from equilibrium. Abbr.: S.H.M., s.h.m.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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