Question: 2 . A ( 2 . 0 mathrm { ~kg } , 3 0 mathrm { ~cm } ) diameter disk

2. A \(2.0\mathrm{~kg},30\mathrm{~cm}\) diameter disk is spinning at 300 rpm . How much friction force must the brake apply to the rim to bring the disk to a halt in 3.0 s ?
2 . A \ ( 2 . 0 \ mathrm { ~kg } , 3 0 \ mathrm {

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