Chapter 5, Problem 67A

To determine

The waythe coefficient of friction is greater than 1.

Answer to Problem 67A

A coefficient of friction is usually never greater than 1. There are only rare exceptions where it would be greater than 1.

Explanation of Solution

Introduction:

A coefficient of friction is usually never greater than 1. There are only rare exceptions where it would be greater than 1. When the friction coefficient is greater than 1, then one can assume that it requires less force to lift the object from the ground. Rather than sliding it across a surface,this just means it will be harder to push.

One would measure it the same way you measure all other friction coefficient.

Friction force = (friction coefficient) (F_n)

For example:

Car on concrete then force required = 1.7 mg

Car on ice then force required = 0.15 mg

So, if you tried to push the car on concrete it would be pretty difficult. However, if you pushed the car on ice it would be around 0.15 much easier.