4-123. The crate is on the ground and is to be hoisted using the three slings shown. Replace the system of forces acting on the slings by an equivalent resultant force and couple moment at point O. The force F is vertical. Problem 4-123 x F2 = 500 N N F3 = 400 N F = 600 N 45% 45 0.25 m 0.25 m 60 120 30 y 1 m