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A disc has mass 'M' and radius 'R'. How ...

A disc has mass 'M' and radius 'R'. How much tangential force should be applied to the rim of the disc so as to rotate with angular velocity `omega` in time 't'?

A

`(MRomega)/(4t)`

B

`(MRomega)/(2t)`

C

`(MRomega)/(t)`

D

`MR omega t`

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