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What is the gravity at the height of 15000 km above the earth surface

  • Science -

    The Earth's radius is Re = 6357 km. A location 15,000 km above the surface would be
    Re + 15,000 = 21,357 km
    from the center.

    Since the accleration of gravity, g, is proportional to 1/R^2, where R is the distance from the center of the earth, at that height

    g = (6357/21,357)^2 * 9.8 m/s^2
    = 0.87 m/s^2

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