Question

Assertion: Rotation of the earth
is a form of periodic motion
Reason: It repeats the motion
at regular intervals of time​

Answer 1

Answer:

Both assertion and reason are true and reason is correct explanation of assertion.

Explanation:

Rotation of earth on its axis replicates its motion after a fixed period of time, so its movement is periodic. The motion of the earth revolving on its axis in every 24 hours is a kind of periodical motion because the time span of 24 hours is fixed. Rotation is not a simple harmonic motion as it's not a to and fro motion.

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Answer 2

Explanation:

The Earth is rotating but not around the Sun, it is rotating (or spinning) around its north/south axis. It is also revolving (or orbiting) around the Sun. Each rotation is one day and each revolution is one year. ... All stable orbits are periodic, in that they take the same amount of time for each go-round.

Assertion is correct ...

Example of Earth – The earth moves around the Sun, so it has circular motion, the earth repeats its motion around the sun after regular intervals of time (of one year), so it has periodic motion and earth also rotates on its axis, so it has rotational motion.

reason also correct

both assertion and reason is correct but reason is correct explanation than assertion