حلول التدريبات العملية الجاذبية - ديناميكا (دون الطاقة)

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للتعبير عن البعد X بدلالة نصف قطر الكرة الأرضية R. نعبر عن d بدلالة  R. و m₂ بدلالة m₁:  

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