Question

A mass of 6kg is whirled round a circle of radius 50cm. If the body was found to have a linear speed of 3m/s, calculate(a) The Angular Velocity (b) The number of Revolutions it makes in 20 seconds.

Answer 1

the period for one revolution is 100π cm / 300 cm/s = 1/3 s
so the frequency is 3 Hz
(a) ω = 2πf
(b) 20s * 3rev/s = 60 rev