Required: Vertical displacement at C PL AE E MB = 0 Fal (6m) – 50kN (2.5m) =0 Fa = 20.83kN %3D Steel L= 4 m Aluminum L= 3 m A = 300 mm2 Al E=70 GPa A = 500 mm2 %3D F. E= 200 GPa E Fy = 0 + A B 3.5 m - 2.5 m Fal + F, = 50kN F = 29.17KN 50kN 6m 3.5m 8 AL SAL 85.8 Al y 85.8 Al 3.5m 6m

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