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範例:非固定體的鉛直面圓周運動

小木塊質量為m沿無摩擦的翻圈軌道滑行,如圖所示。若木塊在P由靜止起動,(1)在Q處木塊的動能為多少? (2)在Q處木塊作用於軌道之力為多少? (3)m到環頂時,m施於軌道之力為多少? (4)若欲使m恰可滑至環頂,則m應從距底面多高處下滑?

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By admin – 2009 年 04 月 22 日

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