The three-bar truss ABC shown in the figure has a span L = 3 m and is constructed of steel pipes having cross-sectional area A = 3900 mm^2 and modulus of elasticity E = 200 GPa. A load P acts horizontally to the right at joint C. 1. If P = 60 kN, what is the horizontal displacement of joint B? a. 1.99 mm b. 7.50 mm c. 5.21 mm d. 2.25 mm 2. What is the maximum permissible load P if the displacement of joint B is limited to 2.5 mm?  a. 85.0 kN b. 75.4 kN c. 52.1 kN d. 12.5 kN

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