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 3. Consider a 16 kg industrial grinding wheel, 26 cm in diameter, spinning at 900 rpm. The brake pads are actuated by 2.1-cm-diameter pistons, and they contact the wheel at an average distance of 11 cm from the axis. If the coefficient of kinetic friction between the brake pad and the wheel is 0.59, what oil pressure is needed to stop the wheel in 4.8 s?

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 3. Consider a 16 kg industrial grinding wheel, 26 cm in diameter, spinning at 900 rpm. The brake pads are actuated by 2.1-cm-diameter pistons, and they contact the wheel at an average distance of 11 cm from the axis. If the coefficient of kinetic friction between the brake pad and the wheel is 0.59, what oil pressure is needed to stop the wheel in 4.8 s?

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter1: Heat, Temperature, And Pressure

Section: Chapter Questions

Problem 6RQ: One British thermal unit will raise the temperature of _____ 1b of water _____F.

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