Physics
Senior High
題目要求碗裡面接觸點的作用力，求不出來..
進階題(共15分)
質量均勻的木棒,長為ㄥ,重量為W,置於半徑為R(L= = R)
的半球形光滑碗內而呈平衡,如附圖所示。碗內與木棒接
凸
觸點的作用力量值為何? (1)
-R→..
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