http://users.on.net/~rohanlal/Q20.jpg [Broken] A couple is two forces acting in parallel and opposite directions. F1=20N F2=22N F3-18N Couple=15N I have to determine the magnitude and direction of a single force that has the same effect on the beam as F1+F2+F3+ the couple. To do this would I find the sum of all the x and y components of these forces, then find the resultant of the x and y and make it negative? Also, im having trouble understanding the diagram. Which ways is the couple exerting force on the beam?