1. أ.1 - إيجاد تسارع الجاذبية على ارتفاع عالٍ
فقط الجاذبية العامة هي التي تؤثر على الجسم. نُشير لهذه القوة بـ Fg.
نرسم مخطط للقوى المؤثرة على الجسم:
نكتب معادلة الحركة، ونشير إلى تسارع الجسم بـ g:
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نعبر عن تسارع الجاذبية على ارتفاع h فوق سطح الأرض:
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نحسب تسارع الجسم على ارتفاع 6000 كم فوق سطح الأرض
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