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Re: Coefficient of Friction Testing
Quote:
Originally Posted by kramarczyk
Do you guys actually measure the angle and then do the trig? Wouldn't measuring the rise over run with a carpenters square provide better resolution. Rise / run = tan theta = CoF
An 1/8" difference in rise is pretty easy to measure and works out to ~ 1% change in CoF.
12/18 = 0.66667, 12.125/18 = 0.67361, 1.03% difference
17/12 = 1.41667, 17.125/12 = 1.42708, 0.73% difference
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How accurately can you measure the rise and run with respect to gravity? Using a carpenter's square is good, but you have to ensure that it is square with gravity also.
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