ok, change angular speed from revs/min to radians/sec.
then the law of momentum takes place
Initial momentum=final momentum
I wi= (I + masskid*radius^2) wf
solve for wfinal wf.
A playground merry-go-round of radius R = 2.15 m has a moment of inertia of I = 256 kg * m2 and is rotating at 10.9 revolutions/min about a frictionless vertical axle. Facing the axle, a 29.6 kg child hops onto the merry-go-round and manages to sit down on its edge. What is the new angular speed
1 answer
1 answer