A 500 N block is resting on an inclined plane. See figure below. coefficient of static friction, u, = 0.3, coefficient of kineticfriction, µk = 0.21. Find the minimum value of P necessary to have an impending motion if e = 30°.2. Find the maximum value of P necessary to have an impending motion if e = 30°.3. Find the value P that will still make the block in equilibrium condition.Wus = 0.3n = 0.2

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A 500 N block is resting on an inclined plane. See figure below. coefficient of static friction, µ̟ = 0.3, coefficient of kinetic riction, µk = 0.2 1. Find the minimum value of P necessary to have an impending motion if 0 = 30°. 2. Find the maximum value of P necessary to have an impending motion if 0 = 30°. 3. Find the value P that will still make the block in equilibrium condition. us = 0.3 IA = 0.2

A 500 N block is resting on an inclined plane. See figure below. coefficient of static friction, µ̟ = 0.3, coefficient of kinetic riction, µk = 0.2 1. Find the minimum value of P necessary to have an impending motion if 0 = 30°. 2. Find the maximum value of P necessary to have an impending motion if 0 = 30°. 3. Find the value P that will still make the block in equilibrium condition. us = 0.3 IA = 0.2

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 7.36P: The coeffient of static friction between the uniform bar AB of weight W and the ground is 0.45. Find...

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Example 1: A 200 Ib block is at rest on a 30° incline. The coefficient of friction between the block and the incline is 0.20. Compute the value of a horizontal force P that will cause motion to impend up the plane. Given: e = 30° W = 200 pounds (motion) 200# Unknowns: N, P, F 300 30 N
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A 200 lb block is in contact with a plane inclined at 30 degrees to the horizontal. A force P, parallel to and acting up the plane, is applied to the body. If the coefficient of static friction is 0.20, find: a. the value of P to just cause the motion to impend up the plane b. the value of P just to prevent motion down the plane c. the magnitude and direction of the friction force F if P= 80 lbs
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