Question

Asked Oct 3, 2019

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A machine part has the shape of a solid uniform sphere of mass 225 g and diameter 3.30 cm . 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 friction force of 0.0200 N at that point.

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

Express your answer in radians per second squared.

Step 1

**Given:**

Mass of the sphere = 225 g = 0.225 kg

Diameter = 3.30 cm or Radius = 1.65 cm

Force in equator = 0.02 N

Step 2

Calcualting the angular accel...

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