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October 25, 2014

Homework Help: Physics

Posted by Jim on Tuesday, May 8, 2007 at 10:33pm.

Can you please help with this problem. I don't know how to solve it at all.

A uniform solid disk with a mass of 32.3 kg and a radius of 0.464 m is free to rotate about a frictionless axle. Forces of 90.0 N and 125 N are applied to the disk.

(a) What is the net torque produced by the two forces? (Assume counterclockwise is the positive direction.)
Nm
(b) What is the angular acceleration of the disk?
rad/s2


The torque about the axle requires further information on where and in what direction the forces are applied. Was there supposed to be a figure with this question?

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