Question

An oscillatory motion is always periodic,but a periodic motion is not always oscillatory'. Explain the statement with an example

Answer 1

Explanation:

a periodic motion is a motion in which a particle repeats its motion after a fixed time period . for example circular motion , pendulum motion are periodic motions .

meanwhile , an oscillatory motion is a motion in which particle moves to and fro about a fixed point , for example motion of a pendulum .

thus we can say pendulum's motion is both oscillatory and periodic while circular motion is only periodic motion .

so we can say , an oscillatory motion is always a periodic motion but a periodic motion may or may not be an oscillatory motion .

please rate and heart .

Answer 2

Answer:

(1) Periodic motion : A motion that repeats itself at

definite intervals of time is said to be a periodic

motion.

Examples: The motion of the hands of a clock, the

motion of the Earth around the Sun.

(2) Oscillatory motion: A periodic motion in which a

body moves back and forth over the same path,

straight or curved, between alternate extremes is

said to be an oscillatory motion.

Examples: The motion of a taut string when

plucked, the vibrations of the atoms in a molecule,

the oscillations of a simple pendulum.

[Note: The oscillatory motion of a particle is also

called a harmonic motion when its position, velocity and

acceleration can be expressed in terms of a periodic,

sinusoidal functions-sine or cosine, of time.]