Question

A body performing uniform circular motion completed 140 revolution in a second. Its angular speed is
(1) 880 rad/s
(2) 440 rad/s
(3) 220 rad/s
(4) 240 rad/s​

Answer 1

Explanation:

Time taken to complete 1 revolution = 1/140 sec

Angular velocity = ω = 2∏ / T = 2 * 22 / 7 * 140 = 880 rad/s