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January 28, 2015

January 28, 2015

Posted by **Kelsey** on Saturday, April 17, 2010 at 9:40pm.

I do not even know where to start on this problem.

- physcs -
**drwls**, Saturday, April 17, 2010 at 10:47pmI w /8.0 s = angular momentum decrease rate = torque = friction force* radius

w is the initial angular velocity

= 55*2*pi/60 = 5.76 rad/s

I is the moment of inertia

Solve for the friction force and use that and the applied normal force to get the coefficient of kinetic friction.

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