Problem 268 | Resultant of Non-Concurrent Force System
Problem 268
The resultant of four forces, of which three are shown in Fig. P-268, is a couple of 480 lb·ft clockwise in sense. If each square is 1 ft on a side, determine the fourth force completely.
![Three forces in Planar Space](http://www.mathalino.com/sites/default/files/images/268-269-three-forces.gif)