Part $3(25$ points$)$:

A pipe bracket is loaded as shown.

A$.$ Draw the position vector from $O$ to $A$

B$.$ Write the position vector in your drawing in Cartesian vector form:

$r_{OA}=(200mm)hat()+(250mm)hat()+(150mm)hat(k)$

C$.$ Write the force $F$ in Cartesian vector form:

$F=$

D$.$ Calculate the moment at point $O$ due to the force $F$ and report it in Cartesian vector form.

E$.$ Draw the moment with its base at $O$ on the figure. Include its magnitude.

F$.$ What does the direction of the moment vector mean? $($Other than "its direction"$)$