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範例：靜力平衡與張力

一柔軟鐵鏈，懸吊於二牆之間，鏈重W，A點切線與牆夾角37o，B點切線與牆夾角53o，C點為最低點，則(A)A點之張力為4W/5 (B)B點之張力為3W/5 (C)C點之張力為W (D)C點之張力最大 (E)各點張力之水平分量相同。[83北聯]

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By admin – 2010 年 09 月 15 日

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