A crate is suspended by two cables and one spring having a stiffness of (K=140 Nm). Suppose the system in state of equilibrium then : 1) Draw the free body diagram. 2) Determine the forces in the cables (AB) and Spring (AC) if the force of Cable AD is written FAD 52i-33j+74k 3) Determine the stretch of the spring and the mass of the crate. 4) Find angles a,B,y of the force FAD. D N K-140 Nm Crate B