将球体分成上下相等的两个半球:则对上半球有如下关系:F上-F下=F浮
F下=F上-F浮
F上=PS=ρg(h+r)πr2
F浮=ρg½V=½ρg(4/3)πr3=2/3ρgπr3
F下=F上-F浮=ρg(h+r)πr2-2/3ρgπr3=ρghπr2+1/3ρgπr3
将球体分成上下相等的两个半球:则对上半球有如下关系:F上-F下=F浮
F下=F上-F浮
F上=PS=ρg(h+r)πr2
F浮=ρg½V=½ρg(4/3)πr3=2/3ρgπr3
F下=F上-F浮=ρg(h+r)πr2-2/3ρgπr3=ρghπr2+1/3ρgπr3