In the gure, a lead brick rests horizontally on cylinders A and B. The areas of the top faces of the cylinders are related by AA: 1.7 A3; the Young's moduli of the cylinders are related by EA: 1.6 E3. The cylinders had identical lengths before the brick was placed on them. What fraction of the brick's mass is supported (a) by cylinder A and (b) by cylinder B? The horizontal distances between the center of mass of the brick and the centerlines of the cylinders are dAfor cylinder A and dB for cylinder B. (c) What is the ratio dA/dB? (a) Number n Units v (b) Number Units v (c) Number l Units v