Question: A 8 0 0 - gram grinding wheel 2 2 . 5 cmcm in diameter is in the shape of a uniform solid disk. (

A 800-gram grinding wheel 22.5 cmcm in diameter is in the shape of a uniform solid disk. (We can ignore the small hole at the center.) When it is in use, it turns at a constant 205 rpmrpm about an axle perpendicular to its face through its center. When the power switch is turned off, you observe that the wheel stops in 45.0 ss with constant angular acceleration due to friction at the axle. What torque does friction exert while this wheel is slowing down?

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