The trussed beam supports a concentrated force of 80 k at its center. Determine the force in each of the three struts and draw the bending-moment diagram for the beam. The struts each have a cross-sectional area of 2 in². Assume they are pin connected at their end points. Neglect both the depth of the beam and the effect of axial compression in the beam. Take E = 29(10³) ksi for both the beam and struts. Also, for the beam and struts. Also, for the beam I = 400 in⁴.

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80 k ft 12 ft 12 ft