Question

Science-
5. Which of the following is not a periodic motion?
(a) Pendulum of a clock
(b) The earth rotating on its axis
(c) A boy enjoying on a swing
(d) The earth revolving around the sun​

Answer 1

An arrow released from a bow is not a periodic motion while all others are periodic motion.

e

Answer 2

( a ) pendulum of a clock. answer