726_Mechanics Homework Mechanics of Materials Solution

# 726_Mechanics Homework Mechanics of Materials Solution -...

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Unformatted text preview: [ V_J Ln_wj r—. L.__J mﬂm PROBLEM 6.68 6.67 and 668 An extruded beam has the cross section shown. Determine (a) the location of the shear center 0, (b) the distribution of the shearing stresses caused by a 25—kip vertical shearing force applied at 0. SOLUTION I = 2“" 21839? Y+(3)(i\(4\] 4 é( X503 = 145.9“ m" PquAB A=ﬁx 3:4 Q=A§= x HIM“ _VQ. (25mm LxJ 1" (453mg) 2 12°55." P0fn+ A x z 0 t = O -‘ Raid ‘8 x = 3 mg, 6.62 ks; ‘ 3 2 F.= 311M = So (2-1055x3-i'41x , airs; % 2.205- a ‘ ‘— (q. :9( .) ? 2.9812 kt'rs +DMH “-‘OMH 256: PICS) e«- 0.79? zn. Q= 3 -+ Jaw-N33”: = 3 + Mia-5‘) = 7-ﬁy‘ 1,: -gzsx'z-ﬁf) 3 D ff“ 1 =' 7.7m~o.mvf (45.3%“) Poin+ B J '—' l} 7‘." 5.3.3: 15f -‘ Pain"; C 3:0 13112 I“; 4‘ ...
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