由F浮 =ρ液 gV排 =ρ液gΔhs底 =ΔPs底(注 :容器为规则的 ) ,即 :物体在液体中所受的浮力等于规则容器底部变化的压强与容器底面积的乘积 ,表达式为F浮 =Δps底,对此公式的灵活运用 ,不但可以化繁为简 ,化难为易 ,而且能拓宽学生的思维方式 ,培养学生创造性思维能力 ,现举例 F float = ρ liquid gV row = ρ liquid gΔhs bottom = ΔPs bottom (Note: the container is regular), ie: the buoyancy of the object in the liquid is equal to the product of the pressure at the bottom of the regular container and the bottom area of ​​the container, expressed The formula is F floating = Δps bottom, the flexible use of this formula, not only can simplify, easy to change, but also can broaden the students’ way of thinking, cultivate students’ creative thinking ability, for example