思路说明:对于形状一定的容器,液体的量不变时,容器中的液面升降决定于V排的变化.由公式V排=F浮/ρ液g,可知:ρ液一定时,V排∞F浮,则V排和F浮的变化具有同时性、同向性.即F浮↑→V排↑,F浮↓→V排↓,F浮不变→V排 The way of thinking: For a container with a certain shape, when the amount of liquid does not change, the liquid level rise and fall in the container is determined by the change in row V. Formula V row = F float / ρ liquid g, we can see: when the liquid ρ is certain, V row ∞F float, then the change of V-row and F-float has simultaneity and same-direction. That is, F-float → V-float, F-float → V-float, F-float → V-row