Why is 9.8 used as g on Earth but nowhere else in the solar system? Explain.

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  1. Huh? g is not 9.8 on Earth.

    the acceleration at Earth's surface is 9.8m/s^2. The gravitational field at Earth is 9.8N/kg

    Why that number? The mass of the Earth, and the diameter of Earth determine it.


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  2. Because of the affect gravity and the atmosphere on Earth which is currently unique in the solar system.

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