what is the coefficient of static friction of rubber on wood?
Depends on the rubber and the wood. (Yeah, I know that's a cop out.) Check your text or for a table of coefficients, if this is for an exercise.
I checked my text book, there's nothing, i can't find a good web site either.
Didn't find it in my texts either :( You can check the CRC handbook of chemistry and physics at the library for a more precise value, but I think it's around 0.7.
Could rubber on wood be compared to rubber on wet concrete???
In Physics I textbooks usually don't have them.
Check out Physics II Giancoli.
It says it's 1 - 4., so I'd say around 2.42
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