Periodic Motion or Oscillatory Motion or Vibratory Motion

Examples:

(a)  A swinging pendulum

(b)  The piston of an automobile engine

(c)  The balance wheel of a watch

(d)  The motion of a vertical spring with a mass hanging

(e)  The motion of the hands of the clock

(f)  Motion of planets around the sun

Now carefully study the explanation on Periodic Motion.

Periodic Motion: If a body moves back and forth about a mean or equilibrium position, this motion is called Periodic Motion.

This type of motion is also called Oscillatory or Vibratory motion.

Note 1: All periodic motions are not necessarily oscillatory.

Note 2: In the examples listed above, examples (e) and (f) are not Oscillatory motion.

The simplest type of Oscillatory motion is referred to as Simple Harmonic Motion (SHM).

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