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Mini-Quiz: Standard Friction Equation

by Ron Kurtus (revised 21 October 2016)

Take this Mini-Quiz to check your understanding of the lesson material.



1. How are the equations for static and kinetic friction different?

Same equation with different values of the coefficient of friction

Kinetic friction has an area component

Static friction does not use the coefficient of friction

2. What usually happens to the COF when you double the area in contact?

The COF doubles

It usually stays the same

The COF is cut in half

3. What usually happens when you increase the normal force?

The friction increases

The COF increases

The normal force decreases

If you got all three correct, you are on your way to becoming a Champion in Physics. If you had problems, you had better look over the material again.


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