In the figure, a lead brick rests horizontally on cylinders A and B. The areas of the top faces of the cylinders are related by AA= 1.9 AB; the Young's moduli of the cylinders are related by EA= 2.6 Es. 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 d for cylinder B. (c) What is the ratio dA/d? com of brick A B (a) Number Units (b) Number i Units (c) Number Units