A 200-lb block rests as shown on a wedge of negligible weight. Knowing that the coefficient of static friction is 0.25 at all surfaces of contact, determine the angle θ for which sliding is impending and compute the corresponding value of the normal force exerted on the block by the vertical wall

A 200-lb block rests as shown on a wedge of negligible weight. Knowing that the coefficient of static friction is 0.25 at all surfaces of contact, determine the angle θ for which sliding is impending and compute the corresponding value of the normal force exerted on the block by the vertical wall

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 7.24P: A uniform plank is supported by a fixed support at A and a drum at B that rotates clockwise. The...

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Question

A 200-lb block rests as shown on a wedge of negligible weight.
Knowing that the coefficient of static friction is 0.25 at all surfaces
of contact, determine the angle θ for which sliding is impending and
compute the corresponding value of the normal force exerted on the
block by the vertical wall

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