A) Explain briefly why this structure in Figure 2 can be modeled as a pin-jointed structure (PJS) for the purpose of determining the axial forces in the members
B) Show that the structure is statically determinate.
C) Determine the reaction forces at supports A and B.
D) Using the method of joints determine the axial forces in members AC and AF.
Isolating joint A gives the following free-body diagram:
E) Using the method of sections, determine the force in member GH.
