Q2 (a). If the allowable bearing stress for the material under the supports at A and B is () -2.0 MPa, determine the size of square bearing plates A' and B' required to support the load. Dimension the plates to the nearest mm. the reaction at the supports are vertical. Take P = 100 KN. (Note: work in SI units and the final result should be in SI units) [10 points] Q2 (b). If the allowable bearing stress for the material under the supports at A and B is () -2.0 MPa, determine the maximum load P that can be applied to the beam. The bearing plates A' and B' have square cross-sections of 150 mm x 150 mm and 250 mm x 250 mm, respectively. (Note: work in SI units and the final result should be in SI units) For Q2 (a) and Q2(b) [10 points]