How many complete revolutions does it turn

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A large grindstone wheel ( a solid cylindrical disk made of stone) has a mass of 30 kg. and a radius of 50 cm. It is spinning at an angular rate of 90 rev./min. A brake is applied at the edge of the disk and pushed against it with a force of 25 newton. If the brake coefficient of
friction is u=.65,

a) what is the torque acting on the wheel?

b) what is the angular acceleration of the wheel?

c) How many complete revolutions does it turn through before stopping?

Reference no: EM13513890

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