Introduction to Engineering
Introduction to Engineering ENGR 120
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This 1 page Class Notes was uploaded by Mckenna Lubowitz on Saturday October 3, 2015. The Class Notes belongs to ENGR 120 at Boise State University taught by Staff in Fall. Since its upload, it has received 14 views. For similar materials see /class/218032/engr-120-boise-state-university in Engineering & Applied Science at Boise State University.
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Date Created: 10/03/15
II IIf llGllllII III In car I19 Dimensional Analysis During your g39 39 g y 39 39 39 d 39 h h the numerical value and the units ordimensions ol a variable in an equation You have had considerable experience in determinirg the numerical value in many ol your math classes Determining the proper units or imensions uy 39 39 39 n I is is quot lU u an 39 39 oliers the lolloMng advantages It i tuuem M m units ol 39 an equation u lt mm 39 g quot your answer has the appropriate units Examples Example 1 7 Convert 6 inches into the appropriate number ol centimeters The conversion lactor lrom centimeters cm to inches in is1 in 2 54 cm therelore 653X254cm1524cm 155 E pl k A 39 nnlniir r llhn L a as lollows L W H 0 5 in Density D mass M Volume M 2 7 g Volumecube L x W x H 1 in 2 5 cm 1 cm 1 ml D M 27g x 14a x x 153 v 055a055n055a 254cm 254cm 254cm D 2 7g 0 5 2 54cma D132gcma x1cma 132gml 1ml Rules to remember Only quantities ol the same dimension may be added subtracted compared orequated When quantities those with like or unlike dimensions are multiplied or divided their dimensional symbols are likeMse multiplied or divided yum v39inlnny h 14 symbols attached to those quantities Relerences http www physics uoguelph catutorialsdimanaly http en wikipedia orgwikiDimensional analysis College of Engineering