M i right

1. May 16, 2009

-=Mad=-

is this the wriye formula of cofficient of friction

22/7 x D x n/12

2. May 16, 2009

tiny-tim

Welcome to PF!

Hi -=Mad=-! Welcome to PF!
Noooo … that's the formula for the distance in feet that a cylinder of diameter D inches rolls after n turns.

Does that help?

3. May 16, 2009

HallsofIvy

Staff Emeritus
Whether that is a formula for friction or the distance a cylinder rolls (assuming that 22/7 is an approximation for $\pi$) or the curvature of a hypersurface depends entirely upon the application- which you did not tell us!

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