A hydraulic brake has master cylinder with area 1.7 cm. The brake cylinder has a cross-sectional area of 6.1 cm. The coefficient of friction between the shoe and wheel drum is 0.4. If the wheel has a radius of 44 cm, determine the magnitude of the frictional torque exerted on the wheel around the axle when the driver applies a force of 45 N on the brake pedal. (Note: generally there is a lever system, as well, to amplify the force of the driver's foot!).

A hydraulic brake has master cylinder with area 1.7 cm. The brake cylinder has a cross-sectional area of 6.1 cm. The coefficient of friction between the shoe and wheel drum is 0.4. If the wheel has a radius of 44 cm, determine the magnitude of the frictional torque exerted on the wheel around the axle when the driver applies a force of 45 N on the brake pedal. (Note: generally there is a lever system, as well, to amplify the force of the driver's foot!).

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.90RP: The screw of the clamp has a square thread of pitch 0.16 in. and a mean diameter of 0.6 in. The...

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