A hanger rod CD is supported by a rigid beam AB that is, in turn, supported by identical vertical…

A hanger rod CD is supported by a rigid beam AB that is, in turn, supported by identical vertical rods at A and B (see Fig. P3.4-12). If the three rods all have the same cross-sectional area, A, and modulus of elasticity, E, determine a symbolic expression that relates the load P to the vertical displacement uD. Write your answer in the form uD = fDP.

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