physics
posted by Anonymous .
If you lift the front wheel of a poorly maintained bicycle off the ground and then start it spinning at 0.72 {\rm rev}/{\rm s}, friction in the bearings causes the wheel to stop
in just 12 {\rm s}.

physics 
drwls
That may be true for this specific bicycle, but you have not asked a question.
You also need to explain the symbol
{\rm 
physics 
Anonymous
If you lift the front wheel of a poorly maintained bicycle off the ground and then start it spinning at 0.72rev/s, friction in the bearings causes the wheel to stop
in just 12s.
Part A
If the moment of inertia of the wheel about its axle is 0.30kg\m2 , what is the magnitude of the frictional torque? 
physics 
.
0.11 N*m
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