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範例:行星系統與脫離能(脫離速度)

欲自地面(地球半徑為R,質量為M,地表重力場為g)發射一質量為m之人造衛星,使它完全脫離地球,則需要之 (A)最小能量(脫離能)為mgR (B)最小能量(脫離能)為 MgR (C)最小能量(脫離能)為GMm/R  (D)脫離速度為 (E)脫離速度為。


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Posted in 重力位能的一般式.

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By admin – 2009 年 05 月 01 日

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