Members ABC and BDE and $CD$ are connected through pins at B$,$ C$,$ D$.$ Member ABC is clamped $($fixed$)$ to the ground and its cross$-$sectional area $=0\mathrm{.}25f{t}^2.$ The pin at $C$ has a diameter of $0\mathrm{.}5in.$ A $2$kip weight hangs from E$.$

Determine:

i$)$ The internal forces at cut $a-a$ on member ABC

ii$)$ The average shear stress and normal stresses at a$-$a

iii$)$ The average shear stress on the pin $C($in single shear$).$