Form the figure shown, a flexible belt placed around a rotating drum of 4-inch radius acts as a brake when the arm ABCD is pulled down by the force P. The coefficient of kinetic friction between the belt and the drum is 0.7. What force P that would result in a braking torque of 400 lb • in., assuming that the drum is rotating counterclockwise. Neglect the weight of the brake arm. 60° . A 2 in 4 in.. B 4 in. +-2 in 60° D
Form the figure shown, a flexible belt placed around a rotating drum of 4-inch radius acts as a brake when the arm ABCD is pulled down by the force P. The coefficient of kinetic friction between the belt and the drum is 0.7. What force P that would result in a braking torque of 400 lb • in., assuming that the drum is rotating counterclockwise. Neglect the weight of the brake arm. 60° . A 2 in 4 in.. B 4 in. +-2 in 60° D
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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