Current Attempt in Progress

Determine the forces in members BC and FG of the loaded symmetrical truss. Show that this calculation can be accomplished by using

one section and two equations, each of which contains only one of the two unknowns. Are the results affected by the statical

indeterminacy of the supports at the base?

Assume $F_1=980N,F_2=460N,F_3=830N,a=1\mathrm{.}7m,b=1\mathrm{.}5m.$

Answers:

$BC=$

N

$FG=$

N