9) A flywheel initially rotating at 1200 rpm stops in 4.00 min
when only friction acts....
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Physics
9) A flywheel initially rotating at 1200 rpm stops in 4.00 minwhen only friction acts. If an additional torque of 300 N-m isapplied, it stops in 1.00 min. (a) What is the rotational inertiaof the wheel? (b) What is the frictional torque?
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SolutionInitial angular velocity of the flywheelTime taken to stop the flywheel when friction acts Final angular velocity of the flywheel when it stops Apply to find
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