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範例 10：旋轉液體的液面 |
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以等角速度ω旋轉的液體，液面的形狀如何求得？ |
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《 解答 》 |
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假設它的剖面是一條曲線，Y 軸是轉軸，旋轉面以 Y 軸為對稱軸，此時在液面會得到一正壓力
R，R可以同時提供向心力  ， ，和重力
因此 
其中  、
都是常數，因此該剖面的曲線是拋物線，液面形狀是該拋物線繞 Y軸的旋轉面。
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About
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This document
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The translation was initiated
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