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题目重20N的容器,容积为4×10~(-2)m~3,装满水后,它对水平桌面的压强为5000Pa,若水的深度为20cm,试求水对容器底部的压力?错解一水对容器的压力,其施力物体是
The container weighing 20N has a volume of 4×10-2 m3. After it is filled with water, the pressure on the horizontal tabletop is 5000Pa. If the depth of the water is 20cm, try the pressure on the bottom of the container. To solve the pressure of a water container, the force is