Block A supporting another block B is pulled along a rough horizontal plane by a horizontal force P. The coefficient of sliding friction between A and the plane is 0.3. The coefficient of static friction between A and B is 0.4. If A's weight is 200 N and B's weight is 100 N, find the largest value of P so that B does not slip on A. B A,

Block A supporting another block B is pulled along a rough horizontal plane by a horizontal force P. The coefficient of sliding friction between A and the plane is 0.3. The coefficient of static friction between A and B is 0.4. If A's weight is 200 N and B's weight is 100 N, find the largest value of P so that B does not slip on A. B A,

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 7.50P: The block of weight W is pulled by the force P inclined at the angle to the horizontal. Find the...

See similar textbooks

Similar questions

Find the smallest distance d for which the hook will remain at rest when acted on by the force P. Neglect the weight of the hook, and assume that the vertical wall is frictionless.
The 600-lb cable spool is placed on a frictionless spindle that has been driven into the ground. If the force required to start the spool rotating is F = 160 lb, determine the coefficient of friction between the ground and the spool. Neglect the diameter of the spindle compared to the diameter of the spool.
The leather rein used to fasten the horse to the hitching rail weighs 3.5 oz per foot. The coefficient of static friction between the rail and the rein is 0.6. If a 34-lb force acting on the bridle is sufficient to restrain the horse, determine the smallest safe length L for the free end of the rein.
The 60-lb plank rests on a frictionless roller at A, and the 20-lb triangular support BD. Both bodies are homogenous. The coefficients of static friction are 0.4 at B and 0.3 at D. Determine the largest force P that can be applied to the plank without initiating motion.
Block A supporting another block B is pulled along a rough horizontal plane by a horizontal force P. The coefficient of sliding friction between A and the plane is 0.3. The coefficient of static friction between A and B is 0.4. If A's weight is 200 N and B's weight is 100 N, find the largest value of P so that B does not slip on A.
Block B is on top of an inclined plane and is being supported by Rod AB, which is attached to Block A. The weight of Block A is 40 KN, and the weight of Block B is 80 KN. Force F prevents the block from sliding. Determine the Normal Force N of the surface that supports Block A. Neglect all friction.
Blocks A, B, and C have weights of 50 N, 25 N, and 15 N, respectively. Determine the smallest horizontal force P that will cause impending motion. The coefficient of static friction between A and B is μs = 0.3, between B and C,μ's = 0.4, and between block C and the ground, μ"s = 0.35.
Block A weighs 500 N and block B weighs 280 N. Block A is held by a cord fastened to the wall. Force P is applied on B to drag it to the left at constant speed. The coefficient of friction between A and B is 0.30 and that between B and the floor is 0.32. Find the following (a) the normal force exerted by B on A, FNA (b) the tension in the cord attached to A, T (c) the frictional force exerted by B on A, fA (d) the force applied on B, P (e) the frictional force exerted by the ground on B, fB.
A highway is designed for traffic moving at 65 mph. There is a portion of the highway that the radius of a curveis 900 ft. The curved is banked shown below so that no friction is required to keep cars on the road. Find,a. The required banking angle θ of the road so that no friction is required.b. The minimum coefficient of friction between the tires and the road that would keep traffic from skidding atthis speed if the curve is not banked.
Block A having a mass of 45 kg rests on block B having a mass of 90 kg, and is tied with a horizontal string to the wall at C. If the coefficient of friction between A and B is 1/4 and that between B and the surface is 1/3, what horizontal force P is necessary to move Block B?
3A. A 100-N block on a rough 30o-incline is acted upon by a force P as shown causing it to accelerate at 2 m/s2 up the plane. The coefficient of kinetic friction is 0.30. (a) Draw the FBD of the block (b) Find the magnitude of P.
The man is pedaling his bicycle at a constant speed up a slippery slope of 5%. The man and the bicycle have a total mass of 82 kg centered at G. If the rear wheel is about to slip, find the coefficient of friction u between the tire and the road. If the coefficient of friction were doubled, what friction force would act on the rear wheel? (Why can we neglect the friction under the front wheel?)