For the shown pipe assembly:

a$)$ Determine the total moment produced by both $F_1$ and the pot weight about point $O($in cartesian form$).$

b$)$ Determine the magnitude of the moment produced by both $F_1$ and the pot weight about axis $OC.$ Is the sense of this moment in the direction from $Oto{C}_{?}$ or $Cto{O}_{?}.$

c$)$ Replace the force system acting on the pipe assembly by a resultant force and couple moment at point $O.$ Express the results in Cartesian vector form.