Question

define the term of ‘periodic motion’. give two example of periodic motion that can be used to measure time.

Answer 1

Frequency ,or the number of repetitions occuring each second is measured in hertz.
The two examples of a periodic motion are - A rocking chair and swing

Answer 2

Answer:

A motion,that repeat itself over a regular interval of time,is known as periodic motion.2 examples of periodic motion are:- (1) A satellite orbiting a planet

(2) A planet orbiting sun

Explanation:

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