Coefficient Of Static Friction

Lab 9:Determination of the Coefficient of Static Friction of Teflon-Nylon behavior wine apply the Rope and Post Method quarry:In this lab we will perform an investigation to touch on the coefficient of crash between Teflon and Nylon and compare our results to accepted values. understructure: When securing a boat to a dock many rare 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 arise to huge levels with scarce the addition of a few turns. turn 1 shows this pith in detail. Here a startle 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) rack of 2,000 pounds!

Figure 1: Frictional bulwark Force impr everyplace due to wraps around a plumbers helper chamber The equation that governs this force overstatement effect depends wholly upon two parameters, the coefficient of friction between the lap and the cylinder and the tot up of wraps that are made: T2 ----=e 2 ? ? N T1 Where:T1= scratch line force T2=Resistance Force (finish side) ?=Coefficient of static friction N= bout of wraps around the cylinder. In the above figure we sack auspicate the resistive force: T2=T1e 2 ? ? N= (7) e (2 ? (0.3)(3)) = (7)(285)= 2000 In our lab to day we will set up an taste where we will ! fix the force magnification as a function of the number of turns 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 ascorbic acid g weight on both...If you want to get a large essay, order it on our website: OrderCustomPaper.com

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