Contrary to what you might expect, a solid steel ball can float on water due to the surface tension effect. Determine the maximum diameter of a steel ball that would float on water at 20oC. What would be your answer for an aluminum ball? Consider the densities of steel and aluminum balls to be 7800 kg/m3 and 2700 kg/m3, respectively. The surface tension of water at 20oC is 0.073 N/m.