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A student holds a bike wheel and starts it
spinning with an initial angular speed of 9.0
rotations per second. The wheel is subject
to some friction, so it gradually slows down.
In the 10.0 s period following the inital spin,
the bike wheel undergoes 65.0 complete
rotations.
Assuming the frictional torque remains
constant, how much more time Ats will it
take the bike wheel to come to a complete
stop?

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