PDA

View Full Version : Mass on turntable


tigerseye
Nov7-04, 04:20 PM
I need help with this one problem:
A small metal cylinder rests on near the edge of a circular turntable that is rotating at a constant speed. The small metal cylinder has a mass of 0.20 kg, the coefficient of static friction between the cylinder and the turntable is 0.080, and the cylinder is located 0.15 m from the center of the turntable.
What is the maximum speed that the cylinder can move along its circular path without slipping off the turntable?

ashfaque
Nov7-04, 04:31 PM
Centrifugal force = Force due to static friction
Centrifugal force = mass*omega^2*radius
Static Force = normal force * mju
normal force = weight
mju = 0.080
equate for omega
:)

arildno
Nov7-04, 04:32 PM
Static friction must provide the centripetal acceleration of the cylinder.