46_Mechanics Homework Mechanics of Materials Solution

46_Mechanics Homework Mechanics of Materials Solution - 9...

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Unformatted text preview: 9 For the truss an 1.5 d loading shown, determine the average normal stress in PROBLEM 1.59 member DF, knowing tha t the cross-sectional area of that member is 2500 mmz. SOLUTION Us‘mi method a? Joini’s +0 ‘anA member "Panes Join+ A -' ISO Fm: BY isimbpar +w'awjzpes F PM: _... L89. FM:- 225,“; T.:::le 3.7.5- 3 (caMPnsS‘t‘o-a ) JoSn‘} D E; = 135%» (can?) = ISSXIO‘? N Feb 87 simifiq" +V‘I‘CLVIfi/p65 225' 5 < ‘3 F“ __ 22:: F 3&- F 2.25 _ 3-75 5'0 For I 1. I Amati A“ '-‘ 2500 mm '—‘ ZSOOXIO-‘I m‘ Issxlo" ‘ '— -2500x:o“ ’ ”54’40 Pr: - -54.o MPca-n S'hMAS 5 6.9;: 7" ...
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