A truss structure is shown in Figure A1-1. The member AB is along the horizontal direction. A horizontal force F=100 N is applied on joint C. (a) (b) A 45⁰ 90⁰ 1m 90⁰ Co 45° F=100N 1m 45° 45° B Figure A1-1 Determine the reaction forces at joints A and B. Determine the loads carried by all the members (AB, BC, BD, AD and DC). Indicate if they are tensile or compressive.

Consider the steel truss and member cross-section presented in figures below. All the members of the truss have the same cross-section as shown in the figure to the right. They all also have a Young's Modulus of 210 GPa. What can the highest value of force F be before member AC fails by buckling? Force 1AN - 300 mm 40° 4 m $35 mm 7m 300 mm 8 m 35 mm 35 mm 35 mm Please provide your answer in kN.

- For the frame of the figure:a) Draw up the free-body diagram of the three elements that compose it, for the BCD element, set theequilibrium equations (summation of forces along the longitudinal axis "t" and the perpendicular "n", as well as thesummation of moments at point C). Note: it is not required to evaluate the reactions or the charges on the elements.b) Make a cut at the midpoint between C and D and “CALCUE” the internal loads numerically.