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what are the units for the coefficients of kinetic and static friction? how does the coefficient of friction depend upon the area of contact?

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter5: Displacement And Force In Two Dimensions

Section: Chapter Questions

Problem 67A

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Concept explainers

Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”

Question

what are the units for the coefficients of kinetic and static friction? how does the coefficient of friction depend upon the area of contact?

Expert Solution

Step 1

$There are mainly three types of friction : Static friction (Friction acting when an object is stationary on some surface) Kinetic friction (Friction acting when an object is moving on some surface) Rolling friction (Friction acting when a circular object rolls over some surface)$

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