University of California, San Diego
Physics 11A - Survey of Physics

H. E. Smith   Fall 2002

   Physics 11a - Lecture #8 Friction
   22 October 2002


Some Coefficients of Friction
Material µs µk
Steel-Steel 0.74 0.57
Copper-Cast Iron 1.04 0.29
Glass-Glass 0.94 0.40
Ice-Ice 0.10 0.02
Aluminum-Ice 0.04  
Ski Wax-Ice 0.02  
Leather-Concrete ~0.5 ~0.3
Wood-Wood 0.3-0.5  
Teflon-Anything 0.04 0.04
Rubber-Solids 1-4  
Rubber-Concrete (Dry) 1.0 0.80
Rubber-Concrete (Wet) 0.30 0.25



Lecture #8 Page 2  Lecture #8 Page 4  Ph 11A Lectures   Ph 11A Home  

Gene Smith

Last modified: Wed., 23 Oct. 2002