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一單擺其擺動的最大幅角為60o,則當擺角為30o時與球擺到最低點時,其動能之比為何?
[詳解]
Posted in 重力位能.
Tagged with 力學能守恆, 動能, 單擺.
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By admin – 2009 年 04 月 10 日
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