Coefficient Of Static Friction

Lab 9:Determination of the Coefficient of Static Friction of Teflon-Nylon porthole wine victimization the Rope and Post Method objective:In this lab we will perform an investigation to sterilize the coefficient of crash between Teflon and Nylon and compare our results to accepted values. entranceway: When securing a boat to a dock many experient sailors realise that the more wraps of a line around a brand the more secure the boat will be held to its position. It is apparent from our everyday experience that this is true because we are using the encounter from one loop to bind up the next. What is not broadly speaking known however is this increase in frictional tweet scales as an exponential function ascending to huge levels with scarce the addition of a few turns. take to 1 shows this pith in detail. Here a starting time tug of 7 pounds on one side of a band engrossed 3 times around a metal holler is enough to hold back a pulling (resistive) ra ck of 2,000 pounds!

Figure 1: Frictional protection Force impr everyplace due to wraps around a diver chamber The equation that governs this force overstatement effect depends wholly upon two parameters, the coefficient of friction between the band and the cylinder and the topic of wraps that are made: T2 ----=e 2 ? ? N T1 Where:T1= scratch force T2=Resistance Force (finish side) ?=Coefficient of static friction N= bout of wraps around the cylinder. In the above figure we erect auspicate the resistive force: T2=T1e 2 ? ? N= (7) e (2 ? (0.3)(3)) = (7)(285)= 2000 In our lab today we will set up an taste where we will set the force ma gnification as a function of the number of t! urns of Nylon rope around a cylinder of Teflon. By plotting this data we can, using TRENDLINE analysis, easily determine the coefficient of friction, ?, of this system. summons:Using the Hatch apparatus, place a Nylon rope over the top of the Teflon mandrel. Hang a atomic number 6 g weight on both...If you want to get a large essay, order it on our website: OrderEssay.net

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