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沉底的浮力和上浮的浮力哪个大
更新时间: 2020-10-29 00:00:00  

上浮的浮力。因为漂浮是浮力等于重力,而沉底是浮力小于重力。浮力是指物体在流体(液体和气体)中受到的力,方向与其重量相反,来自各表面受流体(液体和气体)压力的差(合力)。

浮力的定义式为F浮=G排(即物体浮力等于物体下沉时排开液体的重力),单位为牛顿,浮力原理则由阿基米德于公元前245年发现。

关键词: 沉底 浮力 上浮 哪个

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