Question

a motor turns 21.6 revolutions in 0.75 second. what is the angular speed of the motor in rpm? in radians per second?

Answer 1

rpm = 21.6 rev/(0.75/60 min)= 60*21.6/0.75 = ___

rad/s = (21.6 rev)*(2 pi rad/rev)/0.75 s
= ____