كم وزن كوكب الأرض وكيف عرفناه؟

26 يناير 2013

كم وزن كوكب الأرض؟

كتلة الأرض ببساطة هو ,000,000,000,000 ,000,000,000,000 6... أي رقم 6 إلى جانبه 24 صفراً كيلو غرام علماً أن نصف قطرها 6,400,000 متراً.

كيف عرفنا وزن الأرض؟

الجواب باستخدام قانون نيوتن للجاذبية الذي ينص على وجود قوة جذب بين جسمين يتناسب طردياً مع كتلتيهما وعكسياً مع مربع المسافة بين مركزي كتلتهما. ومن هذا القانون وبمعرفتنا تسارع الجاذبية الحر تم احتساب كتلة الأرض

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أخر المواضيع من قسم : معلومات ثقافية، علمية

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