Coefficients of Friction

Coefficients of Friction

 

Materials Coeff. of Static Friction
Greek letter mus
Coeff. of Kinetic Friction
Greek letter muk
Steel on Steel 0.74 0.57
Aluminum on Steel 0.61 0.47
Copper on Steel 0.53 0.36
Rubber on Concrete 1.0 0.8
Wood on Wood 0.25-0.5 0.2
Glass on Glass 0.94 0.4
Waxed wood on Wet snow 0.14 0.1
Waxed wood on Dry snow 0.04
Metal on Metal (lubricated) 0.06
Ice on Ice 0.1 0.03
Teflon on Teflon 0.04 0.04
Synovial joints in humans 0.01 0.003

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