A bar ACB having two different cross-sectional areas A1 and A2 is held between rigid supports at A and B (see figure). A load P acts at point C, which is distance bi from end A and distance b2 from end B. (a) Obtain formulas for the reactions RA and RB at supports A and B, respectively, due to the load P. (b) Obtain a formula for the displacement dc of point C. (c) What is the ratio of the stress o1 in region AC to the stress o2 in region CB? A1 C B |A P