Question

HELP PLEASE!!!

A wheel makes 20 revolutions per minute. Find the angular velocity.

10π rad/min
20π rad/min
40π rad/min

Answer 1

Angular velocity of a wheel which makes 20 revolutions per minute is 40π rad/min

Explanation:

Angular velocity, ω = 2πf , where f is the frequency.

Here frequency, f = 20 revolutions per minute

Substituting frequency value in angular velocity equation,

Angular velocity, ω = 2πf = 2 x π x 20 = 40π rad/min

So angular velocity of a wheel which makes 20 revolutions per minute is 40π rad/min