So - Now we know about the two main factors that affect the strength of kinetic friction: the coefficient of kinetic friction -- written as mu _k -- and the normal force, F _N.

The coefficient of kinetic friction for rolling wood wheels is about 0.128 and for metal wheels it is 0.096. Here some other questions and things to do.

Static friction coefficient. Kinetic friction coefficient. Rigid blocks. Block-type components. Tilt and pull tests. Dynamic analyses. Estimations. Maximum acceleration response. Maximum displacement ...

Does the coefficient depend on speed (for kinetic friction obviously). Rhett Allain is an associate professor of physics at Southeastern Louisiana University. He enjoys teaching and talking about ...