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A machine part has the shape of a solid uniform sphere of mass 220 g and...

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Physics

A machine part has the shape of a solid uniform sphere of mass220 g and diameter 2.90 cm . It is spinning about a frictionlessaxle through its center, but at one point on its equator it isscraping against metal, resulting in a friction force of 0.0200 Nat that point.

Part A

Find its angular acceleration. Let the direction the sphere isspinning be the positive sense of rotation.

Part B

How long will it take to decrease its rotational speed by 19.0rad/s ?

Answer & Explanation Solved by verified expert
4.4 Ratings (566 Votes)
Mass of the solid uniform sphere M 220 g 022 kgDiameter of the solid uniform sphere D 29 cm 0029 mRadius of the solid uniform sphere R D2 00292 00145mMoment of inertia of    See Answer
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