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
' onplaneaaare a=15ksiandr=5ksi, detennine(a)theangleﬂthatplaneaaforms
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“ —€Aa~#
‘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 aa, 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
GarA 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‘nGSocOséfl 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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 Summer '10
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