The rigid bar AC has length L = 1003 mm and is supported by a deformable rod at B and pin-connected at A, as indicated below. The deformable rod BD has length b = 572 mm, elasticity modulus E = 181 GPa, cross-sectional area Ac = 919 mm^2 and is attached to a bracket at D. Assume the rigid bar is subjected to a concentrated force with magnitude P = 2 kN. Consider alpha = 631 mm and theta = 57 degree. %Matlab input: P = 2; a = 631; b = 572; L = 1003; Em = 181; AC = 919; theta = 57; Determine the vertical displacement of point C. Assume small rotation approximation. delta_C = mm