EXAMPLE 2.3 Determine the magnitude of the component force F in Fig. 2-13a and the magnitude of the resultant force FR if FR is directed along the positive y axis. y (a) 200 lb 45° FR 45° F 30° 45° 60° 30° 200 lb 30° (b) Fig. 2-13 45° F FR 75° 60° 200 lb (c)