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Ask iit jee aieee pet cbse icse state board experts Discussion Response Post to: Rotational motion(HCV)
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GaryK (28)

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Olaaa!! Perrrfect answer. 4  [8 rates]

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Te first part should be easy to understand(that linear velocity decreases due to friction).

To have angular velocity, an external torque must be applied.
This torque will be supplied by friction, having magnitude:

Torque = Force applied due to friction (mg) x Radius of sphere.



Hope this helps
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