[問題] 重力位的微分方程
請教各位前輩
ΔV = -4πGρ (地球內部)
ΔV = 0 (地球外部 其解是調和函數)
該如何去證明他是對的呢= =?
V=Gm/r (重力位)
G (萬有引力常數)
ρ(質體密度)
我的想法是從重力位的積分形式去推
V=G∫∫∫(ρ/r)dv
ΔV=Vxx^2+Vyy^2+Vzz^2 (設質體為球體 v=4/3πr^3)
=-4πGρ[(r^2+1)/r^2]
我算出來怎麼會差一點...= =
感謝
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◆ From: 140.112.6.51
※ 編輯: jasonmit 來自: 140.112.6.51 (02/28 22:13)
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