A 800-gram grinding wheel 28.5 cm 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 245 rpm about an axle perpendicular to its face through its center. When the power switch is turned off, you observe that the wheel stops in 41.0 s with constant angular acceleration due to friction at the axle.
A 800-gram grinding wheel 28.5 cm 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 245 rpm about an axle perpendicular to its face through its center. When the power switch is turned off, you observe that the wheel stops in 41.0 s with constant angular acceleration due to friction at the axle.
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Transcribed Image Text:What torque does friction exert while this wheel is slowing down?
Express your answer newton-meters.
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T= -3.0-10-³
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Nm, in the direction opposite to the
Transcribed Image Text:A 800-gram grinding wheel 28.5 cm 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 245 rpm about an axle
perpendicular to its face through its center. When the power
switch is turned off, you observe that the whipel stops in 41.0 s
with constant angular acceleration due to friction at the axle.
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