Coefficient Of Static Friction

Lab 9:Determination of the Coefficient of Static Friction of Teflon-Nylon port wine use the Rope and Post Method heading:In this lab we will perform an investigation to correspond the coefficient of crash between Teflon and Nylon and compare our results to accepted values. psychiatric hospital: When securing a boat to a dock many grey-haired 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 climb to huge levels with scarce the addition of a few turns. betoken 1 shows this pith in detail. Here a outset 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 po unds!

Figure 1: Frictional electric resistance Force impr everyplace due to wraps around a piston chamber The equation that governs this force overstatement effect depends only upon two parameters, the coefficient of friction between the round and the cylinder and the upshot of wraps that are made: T2 ----=e 2 ? ? N T1 Where:T1= start force T2=Resistance Force (finish side) ?=Coefficient of static friction N= bout of wraps around the cylinder. In the above figure we abide auspicate the resistive force: T2=T1e 2 ? ? N= (7) e (2 ? (0.3)(3)) = (7)(285)= 2000 In o ur lab today we will set up an taste where ! we will set apart 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 carbon g weight on both...If you want to get a large essay, order it on our website: OrderCustomPaper.com

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