● A 90-lb load is suspended from the hook shown in Figure 2.28(a). The load is supported by two cables and a spring having a stiffness k = 500 lb/ft. Determine the force in the cables and the stretch of the spring for equilibrium. Cable AD lies in the x-y plane and cable AC lies in the x-z plane. 30° k = 500 lb/ft 90 lb

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