Please answer also these questions its very important :$4.(8$ pts$)$ Show that A$,=$ Fcd then that A$,=0\mathrm{.}5.(8$ pts$)$ Show that Ay $=2\mathrm{.}7$ kN and Ma $=8\mathrm{.}1$ kNm$\mathrm{.}6.(8$ pts$)$ Show that Ey $=3\mathrm{.}6$ kN and FB $=-900$N$\mathrm{.}7.(10$ pts$)$ Consider the point F at a distance $2\mathrm{.}8$m from A$.$ Determine the internal loads Nr$,$ Vp and Mp in point F$.$