- #1
julz3216
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Homework Statement
A coin is placed on a turntable that is rotating at 45.0 rpm. If the coefficient of static friction between the coin and the turntable is 0.186, how far from the center of the turntable can the coin be placed without having it slip off?
Homework Equations
mv^2/r <= usmg
us= coefficient of static friction
The Attempt at a Solution
I tried using the equation and I converted 45 rpms to rad/sec and I got r=12.17 but this is wrong so I don't know what to do. Maybe I am using the wrong equation?