For a twodimensional truss structure as shown in the figure, determine displacements of the nodes and normal stresses developed in the members using a commercial finite element analysis program. Use \(E=30 \times 10^{6} \mathrm{~N} / \mathrm{cm}^{2}\), and the diameter of the circular crosssection is \(0.25 \mathrm{~cm}\).

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(1) 2 12 cm 3 50 N 9 cm 4