Force of Friction

Problem #: 2 | Variant #: 1

Problem #1: Random Variant
Variant: #1 | #2 | #3
Problem #2: Random Variant
Variant: #1 | #2 |

Hints: How to solve this type of problem

Try a Minitest: 6 problems of this type

NOTE: While these problems are made by a former University Physics professor and are seen thousands of times a week, it is possible that there are typo's or other errors that nobody has yet reported to be fixed. If you are convinced that there is a problem with the solution to this question please send the details to doug@dctech.com