Periodic Motion


 
 
Concept Explanation
 

Periodic Motion

Periodic motion: A type of motion that repeats itself after equal intervals of time is called periodic motion. Example of objects undergoing periodic motion are the to and fro motion of a pendulum, the earth (rotating on its axis), the hands of a clock.

Non- periodic motion: A motion that does not repeat itself at regular intervals or a motion that does not repeat itself at all is called non- periodic motion. Example of non- periodic motion are a car moving on a road, a bird gliding across the sky, and children playing in a park. In everyday life, we observe more than one type of motion, like

·         Birds gliding across the sky (translational and non- periodic)

·         Rotation of the earth on its axis (rotational and periodic)

Sample Questions
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Question : 1

Which of the following are correct :

(a) A type of motion that repeats itself after equal intervals of time is called periodic motion.

(b) A type of motion that repeats itself after equal intervals of time is called non-periodic motion.

(c) Examples of periodic motion are the rotation of the earth about its axis, the revolution of the earth around the sun.

Right Option : C
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Question : 2

A motion that does not repeat itself at regular intervals or a motion that does not repeat itself at all is called_______________________.

Right Option : B
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Question : 3

A type of motion that repeats itself after equal intervals of time is called ______________________.

Right Option : B
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