A force F has the components Fx= 20 lb, Fy =−30 lb, and Fz =60 lb. Determine its magnitude F and the angles θx, θy, and θz it forms with the coordinate axes.

Determine the coordinate direction angles of the force vectors FA & FB. FA is 149 lb and FB is 100 lb.

45° F = 80 lb 3 ft 7 ft X B Z 1.5 ft A oo 100 4 ft 1.5 ft 5 ft D 1 Compute the moment of the force about the axis AB

If the coordinate direction angles for F3 are α=120°, ³³=60° and y3=45°, determine the magnitude and coordinate direction angles of the resultant force acting on the eyebolt. (Ans: 1.55 kip, 82.4°, 37.6° and 53.4°). F₁ = 700 lb 1 F3 = 800 lb F₂= = 600 lb