Two cantilever beams are interconnected by a linear spring having a spring constant K of 9 x 105 N/m (Fig. P.12.35). What is the force in the spring for a load P of 45,000 N? Take I for the beams as 1.4 x 10-4m4, L = 3 m, and E = 2 x 1011 Pa. Use superposition formulae. For ∆B = -1.25 x 103 m, what is P?