Friction and Surfaces
I am trying to recall my physics classes. Is friction
independent of surface area? If you have two 50 pound boxes with different
surface contact areas to the floor. Will both require the same amount of
force to start moving the boxes and keep them moving?
Yes, friction is independent of surface area. The only things that effect
friction are the support force (also known as the normal force), the
characteristics of the materials, and the temperature.
---Nathan A. Unterman
Click here to return to the Physics Archives
Update: June 2012