F2-25. Determine the angle 0 between the force and the line AO. F= {-6i+ 9j+ 3 k} kN 2 m -y 1m -2 m Prob. F2-25

2-2 A 100-N force is applied at end C of the rod as shown. c) Assess the effect of the angle being varied from 0° to 360° to the moment of the 100-N force about point A. [b) (i) MA=0 N-m; (ii) MA=-24k N-m; (iii) MA=-12k N.m] 2-3 A 600-N force is applied on end D of the bent rod as shown. c) Assess the effect of the angle being varied from 0° to 180° to the moment of the 600-N force about point A. [b) (i) MA= 180 N-m; (ii) MA= - 480k N-m; (iii) MA= 180k N-m; (iv) MA=- 432k N.m] Figure IA Figure 150 mm P2-2 600 N 50 cm B P2-3 90 mm 0 000 B 30 cm C 100 N 30 cm

Determine the projected component of the force along the line OA.