V/2. (a) What is released structure (primary structure)? (b) A concentrated force P = 200 kN moves horizontally across the beam. The horizontal reactions at the supports may be neglected. The beam has a rectangular cross section with height 20 cm, width of 10 cm and elastic modulus of 210 GPa. The lengths L, and L, are 10 m and 4 m, respectively. Find deflection curves of beam when Pis at x = 4 m and 8 m, respectively. Draw bending moments of the beam for two loading cases. (c) Finally, determine the maximum bending stresses in the beam as a function of x for 0xL. (50) 17 (84 ima