The cylinder in FIGURE has a moveable piston attached to a
Chapter 16, Problem 72CP(choose chapter or problem)
Disk brakes, such as those in your car, operate by using pressurized oil to push outward on a piston. The piston, in turn, presses brake pads against a spinning rotor or wheel, as seen in Figure CP15.72. Consider a \(15 \mathrm{~kg}\) industrial grinding wheel, \(26 \mathrm{~cm}\) in diameter, spinning at \(900 \mathrm{rpm}\). The brake pads are actuated by \(2.0\)-cm-diameter pistons, and they contact the wheel an average distance \(12 \mathrm{~cm}\) from the axis. If the coefficient of kinetic friction between the brake pad and the wheel is 0.60, what oil pressure is needed to stop the wheel in 5.0 s?
Equation Transcription:
Text Transcription:
15 kg
26 cm
900 rpm
2.0 cm
12 cm
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