Fpull Ꮎ A person, weighing 115 lb, is being lifted by a rope thrown over a tree branch as shown (drawing not to scale). If the static coefficient of friction between the rope and the tree branch is μs = 0.60, and the 0 = 45°. Determine the pulling force required to start lifting the person and the pulling force required to keep the person from falling? Pulling force to lift the person: Pulling force to keep the person from falling: lb lb
Fpull Ꮎ A person, weighing 115 lb, is being lifted by a rope thrown over a tree branch as shown (drawing not to scale). If the static coefficient of friction between the rope and the tree branch is μs = 0.60, and the 0 = 45°. Determine the pulling force required to start lifting the person and the pulling force required to keep the person from falling? Pulling force to lift the person: Pulling force to keep the person from falling: lb lb
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 7.72P
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