672CHAPTER 8Applications of Plane StressProblem *8.4-10A cantilever beam of T-section is loadedby an inclined force of magnitude 6.5 kN (see figure). The lineof action of the force is inclined at an angle of 60° to the horizontal and intersects the top of the beam at the end cross section. The beam is 2.5 m long and the cross section has thedimensions shown.Determine the principal stresses s1and s2and the maximum shear stress tmaxat points Aand Bin the web of the beam near the support.Q5.219 in.3txy736.289 psitmax1777 psi;tmaxAasxsy2b2+txy2s23393 psi;s2sx+sy2Aasxsy2b2+txy2s1159.8 psi;s1sx+sy2+Aasxsy2b2+txy2txyVQItwQbahh12bah+h14b(C) NEUTRAL AXIS(POINTC)sx0sy0Q8.502 in3txy1.2103psiPure shear:s2s1tmaxtxytmax1200 psi
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