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範例:虎克定律[94前中]

將一彈力常數為10N/m、長度為L的理想彈簧，兩端皆施以40N的力時，則下敘述何者正確？(A)彈簧所受合力不為0 (B)彈簧的讀數為80N (C)彈簧的讀數為0 N (D)彈簧伸長量為4 m (E)彈簧不會伸長。[94前中]
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By admin – 2010 年 09 月 07 日

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