A disc with a diameter of 1.6 m and a mass of 500 kg rotates at a frequency of 3000 rpm. A brake shoe is pressed against its cylindrical surface with a force of 200 N. The coefficient of friction between the shoe and the disc is 0.4. Find the braking torque acting on the disc. How long will it take for the disc to stop? How many revolutions will it make before stopping?

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