Problem 3.59[Difficulty: 2]Given:Door as shown; Data from Example 3.6.Find:Force to keep door shut using the two seperate pressures method.Solution:We will apply the computing equations to this system.Governing Equations:FRpcA⋅=y'ycIxxycA⋅+=IxxbL3⋅12=F1h1’F2h2’p0p0F1p0A⋅=F1100lbfft2⋅3×ft⋅2×ft⋅=F1600lbf=x'1 ft⋅=z'1.5 ft⋅=F2pcA⋅=ρg⋅hc⋅L⋅b⋅=γhc⋅L⋅b⋅=F2100lbfft3⋅1.5×ft⋅3×ft⋅2×ft⋅=F2900lbf=For the rectangular doorIxx112b⋅L3⋅=h'2hcIxx⋅hc⋅+=hc112L2hc⋅+=h'21.5 m⋅1123m⋅()21.5 m⋅⋅+=h'22m=The free body diagram of the door is then
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This note was uploaded on 10/19/2011 for the course EGN 3353C taught by Professor Lear during the Fall '07 term at University of Florida.