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Astro

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What is the distance in meters from the Earth's center to a point out-side the Earth where the gravitational acceleration due to the Earth is 1/20 of its value at the Earth's surface?

  • Astro -

    g at earths surface=GMe/re^2

    1/20 g= GMe/r^2= g(1/(r/re)^2

    (r/re )^2= 20
    solve for r.

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