A man attempts to support a stack of books horizontally by applying a compressive force of F = 120 N to the ends of the stack with his hands. If each book has a mass of 0.95 kg, determine the greatest number of books that can be supported in the stack. The coefficient of static friction between the man's hands and a book is (µs)h = 0.6 and between any two books (µ,), = 0.4. %3D

A man attempts to support a stack of books horizontally by applying a compressive force of F = 120 N to the ends of the stack with his hands. If each book has a mass of 0.95 kg, determine the greatest number of books that can be supported in the stack. The coefficient of static friction between the man's hands and a book is (µs)h = 0.6 and between any two books (µ,), = 0.4. %3D

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 7.71P: The 600-lb cable spool is placed on a frictionless spindle that has been driven into the ground. If...

See similar textbooks

Similar questions

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 two uniform sheets of plywood, each of length L and weight W, are propped as shown. If the coefficient of static friction is 0.5 at all three contact surfaces, determine whether the sheets will remain at rest.
A man attempts to support a stack of books horizontally by applying a compressive force of F = 120 N to the ends of the stack with his hands. If each book has a mass of 0.95 kg, determine the greatest number of booksthat can be supported in the stack. The coefficient of static friction between his hands and a book is (μs)h = 0.6 and between any two books (μs)b = 0.4.
The weight of the motorcycle is 151 kg and the weight of the driver is 64 kg. Dimensions: l1 = 0,31 m and l2 = 0,23 m Determine the required frictional force.
The three stone blocks have masses of mA = 60 kg, mg = 15 kg, and mc 50 kg. Determine the smallest horizontal force P that must be applied to block C in order to move this block. The coefficient of static friction between the blocks is Us 0.3, and between the floor and each block is 's = 0.5.
The coefficient of static friction between the 50-kg crate and the ramp is μs = 0.35. The unstretched length of the spring is 800 mm, and the spring constant is k = 660 N/m. Determine the following: 1 The normal force acting on the crate is Blank 1 N. 2 The friction force acting on the crate is Blank 2 N. 3 The minimum value of x at which the crate can remain stationary on the ramp is Blank 3 mm.
The motorcycle weighs 151 kg and the driver weighs 64 kg. Dimension l1 = 0.31 m and l2 = 0.23 m Determine the required coefficient of friction
A worker is pulling down the rope as shown. If the pulleys in the system are frictionless, and the coefficient of static friction between the crate and the floor is μs= 0.3, determine the smallest force the worker must exert on the rope in order to move the 100 kg crate, and the angle θ at this moment.
The three stone blocks have weights of WA = 600 lb, WB = 150 lb, and WC = 500 lb. Determine the smallest horizontal force P that must be applied to block C in order to move this block. The coefficient of static friction between the blocks is μs = 0.3, and between the floor and each block μ's = 0.5.
What is the tension in the cord that connects the two blocks? What is the coefficient of kinetic friction that one block exerts on the other?
Two blocks A and B meet incontact as shown in the figure. If hecoefficients of static friction for allthe surfaces in contact is 0.2,Determine whether the 50-lb force moves theblock A up, keep balance,or move block A down,shifting block B to the right.
The man having a weight of 90 kg pushes horizontally on the crate. İf the coefficient of static friction between the 225 kg crate and the floor is μs=0.3 and between his shoes and the floor is μs’=0.6. determine if he can move the crate.