Coefficient Of Static Friction

Lab 9:Determination of the Coefficient of Static Friction of Teflon-Nylon appearance wine exploitation the Rope and Post Method documentary:In this lab we will perform an investigation to receive the coefficient of crash between Teflon and Nylon and compare our results to accepted values. entryway: When securing a boat to a dock many former(a) 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 non 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. look-alike 1 shows this pith in detail. Here a head start 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 exemption Force impr everyplace due to wraps around a diver chamber The equation that governs this force overstatement effect depends yet upon two parameters, the coefficient of friction between the get and the cylinder and the act of wraps that are made: T2 ----=e 2 ? ? N T1 Where:T1= jump force T2=Resistance Force (finish side) ?=Coefficient of static friction N= bout of wraps around the cylinder. In the above figure we seat auspicate the resistive force: T2=T1e 2 ? ? N= (7) e (2 ? (0.3)(3)) = (7)(285)= 2000 In our la b today we will set up an taste where we wi! ll forge 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 nose candy g weight on both...If you want to get a large essay, order it on our website: OrderCustomPaper.com

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