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範例:靜力平衡與張力[88日大]

一條100公分長的細線,在其下端繫上重量大於30牛頓的重物會將其扯斷。今若將細線對摺，並在摺疊處掛上30牛頓的重物，而用雙手拉住細繩之兩端，慢慢往左、右兩邊張開,欲使細繩不被扯斷，則細繩之兩端最多可被拉開至相距多少公分?[88日大]

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Posted in 合力=0, 歷屆物理考題.

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By admin – 2010 年 09 月 14 日

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