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範例:牛頓第三運動定律

有一竹竿其最大支持能力為900N,今有一質量為60kg的運動員沿竿向上做爬竿運動,當人往上爬時,下列何情況下竹竿不致斷裂?g=10 m/s2 (A)往上a=8 m/s2 (B)往上a=6 m/s2 (C)往上a=4 m/s2 (D)往上a=3 m/s2 (E)往上等速。


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Posted in 牛頓第3運動定律, 牛頓第二運動定律.

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By admin – 2009 年 01 月 08 日

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