Question

1)Among the following which is the example of a uniform circular motion?

A)Artificial satellites motion around the earth
B) Motion of the earth around the sun C) Motion of the tip of second's hand of watch
D)All are examples of uniform circular motion​

Answer 1

Correct option is

A

Motion of a racing car on a circular track

Answer is A.

An object moving in uniform circular motion is moving in a circle with a uniform or constant speed. The velocity vector is constant in magnitude but changing in direction.

Hence, the motion of a racing car on a circular track changes it speed, that is, it increases or decreases speed during the drive not a case of uniform circular motion.

Answer 2

Answer:

1)Among the following which is the example of a uniform circular motion?

Ans:- B) Motion of the earth around the sun