Question

Find the angular velocity in radians per second of a wheel turning at 25 revolutions per minute.

Answer 1

1 revolution= 2π radians= 6,28 radian
1 minute= 60 s
25 rev=50π=157 radian


`(25)/(1)* (6,28)/(60)=2,62 (rad)/(s)`

Answer 2

(25 rev/minute) x (2 pi radian/rev) x ( minute / 60 sec) = 2.618 rad/sec (rounded)