How long will the part spin until it stops

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A manchine part has the shape of a uniform sphere of mass 225g and diametere 3.00cm. It is spinning about a frictionless axle through its center, but at one point on its equator it is scraping against metal, resulting in a frictional force of 0.0200N at that point. If the rotational speed of the part is 22.5rad/s at t=0s, how long will the part spin until it stops?

Reference no: EM13487727

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