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範例:行星運動與力學能守恆

地球半徑R，地表重力場g，一人造衛星質量m，以橢圓軌道繞地球運行，衛星離地球中心最近的距離為2R，速率為VA；離地心最遠距離為3R，速率為VB，求(1)VA:VB=? (2)衛星在離地球最近時之動能多少?(以m、g、R表示)[87中聯]


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Posted in 重力位能的一般式.

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By admin – 2009 年 04 月 30 日

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