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778_Mechanics Homework Mechanics of Materials Solution

# 778_Mechanics Homework Mechanics of Materials Solution -...

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Unformatted text preview: _ _ (QC—J L—J (lo) PROBLEM 7 19 7.19 The centric force P is applied to a short post as shown. Knowingthat the stresses ' onplanea-aare a=-15ksiandr=5ksi, detennine(a)theangleﬂthatplanea-aforms with the horizontal, (b) the maximum compressive some in the pom. SOLUTION 3' PM 6’! -= 0 Tad ': 0 SJ : Gar-‘95:”. : -— E _ x P/JA ,_ (2. +0“ 3 , m A ,sghs“ —€A-a~# ‘P :: .5. ec/g {LIA-(ﬂak ': é .AVEE Force (a) = aro'imaé Triangle :- [3.4 "‘ '5 l5 PROBLEM 220 Two members of uniform cross section 50 x 80 mm are glued together along 7.20 plane a-a, which forms an angle of 25° with thehorizmtal. Knowingthatdie allowable stresses for the gluedjoint are 0’= 800 kPa and r= 600 kPa, determine the largest axial load P that can be applied. SOLUTION q: 6‘ 325° "YI 1PM / For pique arcs 9:65" 1 |:I~X 65° 94! Y -33 Gar-A 6; C0516 4 SJ Sltnle +211} sin 9 as Q 3 O -i- B Sa‘nzcgo‘? o A .55.. - mWw—Xsoow) SinzéS" .. 51's." GS‘” = '(8; ~65} \$896,059 + TU (50.519 - 5:339) = E sl‘nGSocOséf-l O p 3 A f : (Sm/o")(souo“)(eoouog 2 z 6.27,“): N sihwuséf" sin 65" cos (5" Ajﬂowae’oje Value 0‘? P is “Hue smquet‘. P: 3305403“ "" 3.?!) k” d r 330nm" N ...
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