Question

Motion of moon around the earth is a following motion?

• A. periodic
• B. non-periodic
• C. translatory
• D. circulatory

Answer 1

Answer: (A), (D)

circulatory

Explanation for the correct options:(A) and (D)

1. Motion of an object that repeats itself after regular time intervals is said to be periodic motion.
2. As the moon revolves around the earth in a fixed path and at regular intervals of time it is said to have a periodic motion around the earth.
3. Motion of an object along a circular path is called as circulatory motion, and moon revolves around the earth in circular orbits, hence it is also said to have a circular motion.

Explanation for the incorrect options:
Option B:

1. Motion of an object that repeats itself after irregular time intervals.
2. As the moon revolves around the earth in a fixed path and at regular intervals of time it cannot be said to have non-periodic motion.

Option C: Motion of an object along a straight path is called as translatory motion, but moon revolves around the earth in fixed orbits.

Hence, The correct option is option A and option D.