is this the wriye formula of cofficient of friction
22/7 x D x n/12
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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?
Whether that is a formula for friction or the distance a cylinder rolls (assuming that 22/7 is an approximation for [itex]\pi[/itex]) or the curvature of a hypersurface depends entirely upon the application- which you did not tell us!
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