Using the truss given in Figure $1\mathrm{.}1,$

a$)$ Reaction forces at A and G$.$

b$)$ Forces in the members BC$,$ BG and FG$.($State if in Tension or Compression.$)$

c$)$ Stresses in the member BC$,$ BG and FG$.$

Note that there should be a pin support at A and a roller support at D