The aluminum and copper balls were completely immersed in the aquarium with water. Compare the values of the Archimedes force acting on the balls if:
a) balls have equal radii;
b) balls have equal masses.
a) For completely submerged balls of equal radii, the values of the Archimedes force are equal, since the volumes of the balls are equal, and they are immersed in the same liquid. b) A large Archimedean force acts on the aluminum ball, because with equal masses of the balls, the volume of the aluminum ball is greater than the copper one, since its density is less.
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