- #1
-=Mad=-
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is this the wriye formula of cofficient of friction
22/7 x D x n/12
22/7 x D x n/12
Calculating Coefficient of Friction with the 22/7 Formula
- Thread starter -=Mad=-
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The formula 22/7 x D x n/12 is not the correct formula for calculating the coefficient of friction; it actually calculates the distance a cylinder rolls after a certain number of turns. The discussion clarifies that 22/7 is an approximation for pi, which is relevant to the formula's application. The context of the application is crucial to determine if it relates to friction or another concept. Understanding the specific scenario is essential for accurate calculations. The formula's purpose varies based on its use in different mathematical or physical contexts.
- #2
tiny-tim
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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.
Hi -=Mad=-! Welcome to PF!
-=Mad=- said:
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
HallsofIvy
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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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