Question

Motion of the tip of second hand of the clock is an example for ___________

(a) Uniform circular motion

(b) Projectile motion

(c) Motion in a plane with uniform velocity

(d) Motion in a plane with constant acceleration

This question was posed to me in an international level competition.

Question is taken from Motion in a Plane topic in section Laws of Motion of Engineering Physics I

Answer 1

The correct choice is (a) Uniform circular motion

The explanation is: If a particle moves along a circular path with a constant speed then its motion is said to be a uniform circular motion. Hence, the motion of the tip of the second hand of a clock is an example for uniform circular motion.