please solution with steps and if you can use \"sine law\" of adding vectors Eng

Question

please solution with steps and if you can use "sine law" of adding vectors

Engr 210 Engineering Statics Homework Assignment #1 [Resolution & Addition of Forces] A D ring has three cords tied to it. The cords support the forces shown, determine the resultant force applied to the D ring by the cords. Two trucks are used to free a tractor that is stuck in mud. The two trucks must produce a combined force of 400 lb in the direction of the tractor's chassis (in the direction from O to B). Determine the cable forces so that there is no force perpendicular to the tractor's direction (i.e., there is no tipping force). Determine the smallest force F1 such that the resultant of the three forces F1, F2, and F3 is vertical and the angle a at which F1 should be applied.

Explanation / Answer

1)x=f1+f2cos90+f3cos150,y=f1+f2sin90+f3sin150

x=40+60*0+100*sin150=40-86.6=-39.1,y=40+60+50=150     

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