Physics Rotational Motion Question

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chrisbphd
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Report Thread starter 17 years ago
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Can anybody manage to do this question?

A uniform disc of mass m and radius a, rotating at an angular speed w is placed on a flat horizontal surface. If the coefficient of friction is u, calculate the frictional torque on the disc and hence the time it takes for it to come to rest.

Cheers in advance,

Chris
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chrisbphd
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Report Thread starter 17 years ago
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(Original post by chrisbphd)
Can anybody manage to do this question?

A uniform disc of mass m and radius a, rotating at an angular speed w is placed on a flat horizontal surface. If the coefficient of friction is u, calculate the frictional torque on the disc and hence the time it takes for it to come to rest.

Cheers in advance,

Chris
Test over - the answer is
Iw
uamg
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