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範例:表面張力與動力學[89日大]

一長度為L，重量為W1之細鐵桿，受皂膜之表面張力作用以a之加速度向上運動(如圖所示)。今在細鐵桿上掛一重量為W2之小物體後，細鐵桿變為以a之加速度向下運動，則皂膜之表面張力為何?(以W1、W2及L表示之)[89日大]


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Posted in 歷屆物理考題, 液體的界面現象.

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By admin – 2009 年 06 月 09 日

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