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 微積分基本定理》 |
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範例 18：工人拉船 |
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碼頭上，有一個圓筒狀鐵柱，從船上拋出一根繩子，一端固定在船尾，另一端繞鐵柱三圈後由一工人拉著，假設工人施力10公斤，繩子與鐵柱的磨擦係數是1/3，請問船尾受力多大？ |
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《 解答 》 |
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在繩子與鐵柱有  的接觸時，拉力  會提供  （接近  ）的正壓力給鐵柱，所以有  ，積分得  ，其中  就是10公斤， ，而  ，所以  。
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About This
document |
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This document was
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Copyright © 1993, 1994, 1995, 1996, Nikos
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Copyright © 1997, 1998, 1999, Ross
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The translation was initiated by Shu Cheng-chou
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