Any motion in which all the parameters of motion are repeated after a definite rime interval, is called as periodic motion. The time which elapses between successive passages in the same direction through any point is termed the periodic time, or the period, of the motion.
The number of periods comprised in one second is called the frequency; thus, if T is the period, and n is
the frequency of a periodic motion, we have `n = 1/T`.
The motion of the hands of a clock is periodic, the period of the motion of the minute hand being one hour, or 3600 seconds. The bob of a pendulum moves periodically, the period being equal to the time of one complete (to and fro) oscillation. Periodic motion can be along any path. Very often the body undergoing periodic motion has an equilibrium position somewhere inside its path.
`text(Oscillatory motion:-)` If a particle moves to and fro on the same path, the motion is said to be oscillatory motion. A periodic motion may not be oscillatory, for example planetary motion, the hands of a clock.
Any motion in which all the parameters of motion are repeated after a definite rime interval, is called as periodic motion. The time which elapses between successive passages in the same direction through any point is termed the periodic time, or the period, of the motion.
The number of periods comprised in one second is called the frequency; thus, if T is the period, and n is
the frequency of a periodic motion, we have `n = 1/T`.
The motion of the hands of a clock is periodic, the period of the motion of the minute hand being one hour, or 3600 seconds. The bob of a pendulum moves periodically, the period being equal to the time of one complete (to and fro) oscillation. Periodic motion can be along any path. Very often the body undergoing periodic motion has an equilibrium position somewhere inside its path.
`text(Oscillatory motion:-)` If a particle moves to and fro on the same path, the motion is said to be oscillatory motion. A periodic motion may not be oscillatory, for example planetary motion, the hands of a clock.