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Total energy of satellites

  1. Dec 2, 2015 #1
    1. The problem statement, all variables and given/known data
    If two satellites A and B are orbiting the earth out of which A is closer to the earth then the total energy of which earth plus satellite system is lesser?

    2. Relevant equations

    3. The attempt at a solution
    Should I consider only the magnitude while comparing using the formula total energy= -(GMm/2R) or also take the negative sign into consideration?
  2. jcsd
  3. Dec 2, 2015 #2


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    Which has more potential energy, a rock at sea level or a rock below sea level?
  4. Dec 2, 2015 #3
    Are the masses of A and B the same?
  5. Dec 2, 2015 #4
    Should you be considering only the potential energy of the satellites? What else is there?
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