Show transcribed image text 1. For the structure in Fig. 1, (a) find the maximum load P so that the

Show transcribed image text 1. For the structure in Fig. 1, (a) find the maximum load P so that the circular bar will not fail using the octahedral shear stress theory. (b) Calculate the principal stresses, principal directions and the maximum shear stress. The yield point for the circular rod of diameter 0.05 m is 260 MPa. The factor of safety is 2. You may assume that the circular rod governs the selection of P, i.e., the strength of the lever arm far exceeds that of the rod.