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NEET Physics · Medium

Gravitation: Orbital Mechanics MCQ

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Orbital MechanicsMediumQuestion 6251

Question

Binding energy of satellite in orbit (radius r, mass m, planet mass M):
  1. A
    GMm/r
  2. B
    GMm/2r
    Correct
  3. C
    −GMm/2r
  4. D
    GMm/2r²

Correct answer

GMm/2r

Explanation

Binding energy = −(Total E) = −(−GMm/2r) = GMm/2r. Energy needed to free the satellite.

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