Please help me,thank you very much.浮力大于重力是怎么回事儿?为什么物体的浮力与物体的密度无关?就像乒乓球,它的密度小于水的密度,就会上升?这是我的个人理解,有错请指出,

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Pleasehelpme,thankyouverymuch.浮力大于重力是怎么回事儿?为什么物体的浮力与物体的密度无关?就像乒乓球,它的密度小于水的密度,就会上升?这是我的个人理解,有错请指出,Ple

Please help me,thank you very much.浮力大于重力是怎么回事儿?为什么物体的浮力与物体的密度无关?就像乒乓球,它的密度小于水的密度,就会上升?这是我的个人理解,有错请指出,
Please help me,thank you very much.
浮力大于重力是怎么回事儿?为什么物体的浮力与物体的密度无关?就像乒乓球,它的密度小于水的密度,就会上升?
这是我的个人理解,有错请指出,

Please help me,thank you very much.浮力大于重力是怎么回事儿?为什么物体的浮力与物体的密度无关?就像乒乓球,它的密度小于水的密度,就会上升?这是我的个人理解,有错请指出,
根据阿基米德定律来解释：F浮＝G排
G排＝m排g
m排＝V排ρ液
由此,浮力的大小只与物体的体积有关；
打个比方：相同体积、相同质量的铜球跟铁球在水中受到的浮力是一样的；
V铜＝V铁,故V铜排＝V铁排
又∵ρ液都是水
∴F铜浮＝F铁浮
其实很简单的,不懂可以再问.

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