Question

2.Which is an example of periodic motion?

a) To and fro motion of vibrating strings of guitar

b)Rotation of the earth

c)Revolution of the earth

d)all of these
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Answer 1

Answer:

Periodic motion. Periodic motion, in physics, motion repeated in equal intervals of time. Periodic motion is performed, for example, by a rocking chair, a bouncing ball, a vibrating tuning fork, a swing in motion, the Earth in its orbit around the Sun, and a water wave.

Answer 2

Answer:

d

Explanation:

REASON:

• TO AND FRO MOTION OF A GUITAR WILL CONTINUE PERIODICALLY UNLESS AN UNBALANCED EXTERNAL FORCE ACTS UPON IT

• Rotation of the earth repeats every 24 hrs, making it periodic

• Revolution of the earth repeats every 365 days, making it periodic motion