Re: [問題] 重力作功
※ 引述《Jeffery501 (...)》之銘言:
: 考慮作功Fs
: 重力對地表自由落體作功為mgs即公式mgh
: 那重力作功即全部轉換成重力位能
: 那自由落體的動能從何而來
所以mgh=-mgh+1\2mv^2
然後動能總是恰等於兩倍位能
這也很不合理啊
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