Problem $2$:

A $2$D general force system acts on the beam and the beam is in equilibrium. Determine the unknown forces $A_x,A_y$ and the moment $M_A$ at point A by using the equilibrium equations: ${\displaystyle \underset{i=1}{\overset{n}{}}}{F}_{ix}=0$;${\displaystyle \underset{i=1}{\overset{n}{}}}{F}_{iy}=0$ ; and ${\displaystyle \underset{i=1}{\overset{n}{}}}{M}_{oi}=0$ where o is an arbitrary point.