A pipe that is secured on the ceiling is subjected to a force F of magnitude F $=100$ N applied at point B as

shown in the picture.

a$)$ Determine the moment of F about point A$.$

b$)$ Find a horizontal force H $($along line CB$)$ applied at C$,$ which produces the same moment of part $($a$).$

Consider $=60\backslash$deg $.$

c$)$ Determine the angles $(0\backslash$deg deg $)$ of the force that will produce maximum and minimum

moments about point A$.$ What are the magnitudes of these moments?