A particle in circular motion performs 30 oscillation in 6 seconds. Its angular velocity is?

A. 5 rads^-1
B. 6 rads^-1
C. 5π rads^-1
D. 10π rads^-1

Correct Answer:

Option D = 10π rads^-1

Explanation

Angular velocity w = 2π f.
But f = frequency no. of oscillations per second.
= 30/6 = 5Hz.
therefore W = 2π x 5
= 10π rads^-1