Member BCD and tension member BD in Figure P5.77 are made of materials having the same mod...

Member BCD and tension member BD in Figure P5.77 are made of materials having the same modulus of elasticity. Member BCD has a constant moment of inertia I, a cross-sectional area that is large compared to area A of tension member BD, and depth that is small compared to L. Determine the axial force in member BD.

FIGURE P5.77