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範例:錐動擺

錐動擺為一質量m的小球繫於輕繩的下端,繩的上端固定,小球以等速率做水平圓周運動,輕繩在空中掃過一圓錐面。若已知繩長為L,繩與鉛直方向的夾角為θ,則(A)繩上張力為mgsecθ(B)小球轉動的軌道半徑為Lsinθ (C)小球的軌道速率 (D)小球的切線加速度大小為gtanθ(E)小球運轉週期為


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Posted in 牛頓運動定律的應用-等速率圓周運動.

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By admin – 2008 年 12 月 18 日

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