Given the structure shown,

$($a$)$ Determine the$-$equivalent force$-$couple system

about point A from the $3$ forces. $(10$ points$)$

$($b$)$ Identify where a single force would need to be

applied on a vertical line through point A that would

also result in an equivalent system $($provide force and

distance as a scalar above point A $).(10$ points$)$