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题质量相等的两个实心小球的密度之比为ρ1:ρ2=2:3,将它们都浸在水中,当静止时,两球所受浮力之比为F1:F2=4:3,求两球的密度.
The ratio of the density of the two solid balls of equal quality is ρ1:ρ2=2:3. They are all immersed in water. When they are stationary, the ratio of buoyancy to the two balls is F1:F2=4:3. The density of two balls.