30° Q9/ braking system has its braking lever inclined at an angle of 30° to the horizontal plane, as shown in Figure. The diameter of the brake drum is 540 mm and rotates clockwise; the angle of contact surface of the block is 50. At the instant the lever is pressed on the brake drum with a vertical force of 600 N. The coefficient of friction between the brake shoe and the brake drum is 0.4. Assume that the lever and brake shoe are perfectly rigid Brake drum- and possess negligible weight. Find the braking torque. -0.4 m Horizontal plane -0.8 m 600 N

30° Q9/ braking system has its braking lever inclined at an angle of 30° to the horizontal plane, as shown in Figure. The diameter of the brake drum is 540 mm and rotates clockwise; the angle of contact surface of the block is 50. At the instant the lever is pressed on the brake drum with a vertical force of 600 N. The coefficient of friction between the brake shoe and the brake drum is 0.4. Assume that the lever and brake shoe are perfectly rigid Brake drum- and possess negligible weight. Find the braking torque. -0.4 m Horizontal plane -0.8 m 600 N

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 7.60P: The force P applied to the brake handle enables the band brake to reduce the angular speed of a...

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