The composite bar system in Figure 1.48 consists of a steel bar and a bronze bar that are both securely attached to a rigid block and rigid supports. The system is loaded with a total load P at the rigid block. If the total applied load is P = 42,000 lb, determine the stresses in the two bars.

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FIGURE 1.48 2' S } E = 30 x 106 psi A = 1 in Rigid block P 2 Steel bar Bronze B bar Eg = 15 x 106 psi AB = 4 in