COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 5, Problem 75QAP
To determine
The net horizontal force on the yanked book, in terms of F, M, g and μk
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A 750 N box moves at a constant velocity on a floor with a coefficient of static friction μs = 0.800 and coefficient of kinetic friction μk = 0.600. What horizontal force is required to keep the box moving?
Multiple Choice
750 N
450 N
600 N
550 N
500 N
A person pulls at an angle of 0 = 34.0° on three connected crates of masses m¡ = 25.0 kg, m2 = 18.0 kg, and Pull m3 = 15.0 kg over a smooth horizontal floor, as shown in A В the figure. The crates are connected to each other by m, m, m3 identical massless, horizontal strings A and B, each of which can support a maximum tension of 45.0 N before breaking. What is the magnitude F, of the largest pulling force that can be exerted without breaking either of the strings?
A woman holds a book by placing it between her hands such that she presses at right angles to the front and back covers. The book has a mass of m = 1.1 kg and the coefficient of static friction between her hand and the book is μs = 0.55.
m = 1.1 kgμs = 0.55
1) What is the weight of the book, Fgb in Newtons?
2) What is the minimum force she must apply with each of her hands, Fmin in Newtons, to keep the book from falling?
Chapter 5 Solutions
COLLEGE PHYSICS
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