A semicircular bar of rectangular cross section is subjected to the loads Q shown. The inner radius, outer radius, thickness, Young's modulus and Poisson's ratio of the bar are a, b, E and v respectively. Assume that u, = 0 at the highest point of the bar. Assume that the bar is of square cross section, 0.1ax0.1a, and is subjected to the 1 kN force at the ends. The inner radius, outer radius, Poisson's ratio and the shear modulus of the bar are a, 1.1a, and 1/3 and u, respectively. Calculate the displacement component, u, and the stress components, and at the point (a,0). De O