411 REFERENCE · Wikibooks
Physics Study Guide/Frictional coefficients
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
Approximate Coefficients of Friction
Material Kinetic Static
Rubber on concrete (dry) 0.68 0.90
Rubber on concrete (wet) 0.58 -.--
Rubber on asphalt (dry) 0.72
0.68
Rubber on asphalt (wet) 0.53 -.--
Rubber on ice 0.15 0.15
Waxed ski on snow 0.05 0.14
Wood on wood 0.30 0.42
Steel on steel 0.57 0.74
Copper on steel 0.36 0.53
Teflon on teflon 0.04 -.--