Lilj80651 Lilj80651

04-11-2022
Physics

Answered

. a uniform cylindrical grinding wheel of mass 5.00 kg and radius 20.0 cm is turned by an electric motor. once it is turned on it takes 10.0 seconds for the wheel to go from rest to 125 rpm. ignore friction in the bearings of the wheel. (a) find the amount of torque exerted on the wheel by the motor. (b) the motor is switched off and a piece of metal is pressed against the edge of the wheel with a force of 45.0 n. if the coefficient of friction is 0.500 how many turns will the wheel complete before coming to a stop?

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