For the threebar truss shown in figure 10.4, the goal is to find the crosssectional areas of bars so that the weight of the truss is minimal while the stresses in all members are less than the yield strength with the factor of safety \(=2.0\). Perform one iteration using fully stressed design. The current crosssectional areas are \(b_{1}=b_{2}=b_{3}=10 \mathrm{~mm}^{2}\). Use length \(L=1 \mathrm{~m}\), Young's modulus \(=80 \mathrm{GPa}\), and yield stress \(\sigma_{Y}=250 \mathrm{MPa}\).

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000 L3 2 X 1 (2) L Figure 10.4 Threebar truss for fully stressed design 1,000 N