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Gravitational field strength of the earth

  1. Oct 23, 2012 #1

    Using the formula g = [itex]\frac{GM}{r2}[/itex] I found 'g' to equal (9.792121683 x 106 [itex]\frac{N}{kg}[/itex])

    The value of g is 9.8 [itex]\frac{N}{kg}[/itex]. I am wondering if I made an error in my calculations or if there is a method of simplifying to get 9.8.

  2. jcsd
  3. Oct 23, 2012 #2

    D H

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    Staff Emeritus
    Science Advisor

    Units. Always check your units. You most likely divided by the square of the Earth's radius in kilometers.
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