4. Determine the resultant of the force system. Indicate where the line of action of the resultant intersects the line AB. 900 N B 75mm 125mm 1730 N 75mm D A 200mm 100mm 100mm 450 N1. R is the resultant of the four forces A, B, C, and D. Find the magnitude of the angle 0 and the magnitude of C. A= 2200 N R= 1800 N 3 B = 450 N 12 D=580 N 2. Particle A lies on the xy plane and is acted on by the three forces shown. Find the resultant of the three forces. Also find the direction cosines of the resultant. 4.5 m 2.Im 1400 N 90ON 1.8 m 10OO N X /0.6m B 1.8 m //1.2m /c 3. Where must the force R be applied so that its external effect on the bar ABC F2 = 310 N will be the same as the combined R effects of Fi and F2? What is the F1 : 730 N magnitude of R? C 100 mm A B 10 mm 250 mm