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範例:斜面疊磚塊與靜力平衡

長15cm,寬10cm,厚5cm之磚塊,重疊於30o之斜坡上(並不滑動),問最多可疊幾塊?


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Posted in 重心與質心.

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By admin – 2010 年 09 月 28 日

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