Asked by jaeny
A coin of 5.30 gram is placed 12.0 cm from the center of a turntable. The coin has static and kinetic coefficients of friction with the turntable surface of = 0.900 and = 0.470.
What is the maximum angular velocity with which the turntable can spin without the coin sliding?
What is the maximum angular velocity with which the turntable can spin without the coin sliding?
Answers
Answered by
drwls
The static friction coefficient, Us, determines when it starts sliding.
M*g*Us = M*R*w^2
Solve for w, the angular velocity.
w = sqrt(g*Us/R) = 8.57 rad/s
M*g*Us = M*R*w^2
Solve for w, the angular velocity.
w = sqrt(g*Us/R) = 8.57 rad/s
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