COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Question
Chapter 5, Problem 2QAP
To determine
Whether a box should be pushed for a short distance, rest, then push another distance and then repeat the process until the box is where you want or keep pushing the box across the floor once you get it moving.
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A rock rests on a horizontal plane. The plane is slowly tilted so that the angle between the surface and
the horizontal increases to 20 degrees, at which point the rock is about to slip.
What is the coefficient of static friction between the rock and the surface, to two significant figures?
O 0.36
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O 13
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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 30 kg object sits on a table. The coefficient of static friction between the object and the
table is 0.25. What frictional force must you overcome to make the object move?
Chapter 5 Solutions
COLLEGE PHYSICS
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