$4-70($modified$)$

Two force couples and a concentrated $90lb-ft$ couple on the beam. Assume the $90lb-$ft couple acts at the beam centerline and the distance $1\mathrm{.}25ft$ vertically between the $125lb$ forces.

Similar to the example presented in class, compute the resultant moment vector two different ways $($the answers should be the same$)$

A$.$ Recognize force$-$couple pairs and use $rxF$ between their lines of action, plus add in the couple$-$moment.

B$.$ Sum moments of all forces and moment couple about a point A$.$