Question 251277: How many revolutions per minute does a wheel make if its angular velocity is
120 pi radians per hour?
a) 1 rpm b) 2pi rpm c) 1/60 rpm d) 3600 rpm e) 7200 rpm Answer by vksarvepalli(154) (Show Source):
You can put this solution on YOUR website! one revolution means one full circle i.e., a rotation of 360 degrees or 2pi radians.
so here the angular velocity is 120pi radians per hour that means 120pi/2pi = 60 revolutions per hour.
we want per minute so 60 rev per 60 mins so it is 1 rev per min.
ans: 1 rpm