II$.$ Problems

$2.(30$ points$)$ For the truss shown, it is known that force $P=8\mathrm{.}2kN.$

a$.$ Determine if the truss shown is statically determinate or indeterminate,

b$.$ Calculate the reactions a $($G$)($B$)$

c$.$ Using the method of joints, determine the forces in each member at Joint $A,$ and

d$.$ using the method of sections, determine the forces in members $D{F}_{,}D{G}_{?},$ and $E{G}_{?}.$

Be sure to indicate tension or compression.

Joint ABC

Joint ABC

$\{\begin{array}{cc}\text{:}\text{u}\text{a}\text{r}\text{r}& +{\displaystyle \underset{?}{\overset{?}{}}}Fy=-8\mathrm{.}2KN+Gy+Hy\end{array}$

$3$ member

$4^2$

$(\frac{6\mathrm{.}02}{{4\mathrm{.}5}^4})$

Frac $\frac{1}{c}$

$30$

Joint DFC

Joint DF