A 30-cm-diameter, 1.2 kg solid turntable rotates on a
Chapter 12, Problem 12.114(choose chapter or problem)
A 30-cm-diameter, 1.2 kg solid turntable rotates on a 1.2-cm-diameter, 450 g shaft at a constant 33 rpm. When you hit the stop switch, a brake pad presses against the shaft and brings the turntable to a halt in 15 seconds. How much friction force does the brake pad apply to the shaft?
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