Gravitation · NEET Preparation Physics

What is the binding energy of a satellite of mass m revolving in a circular orbit of radius r around the Earth of mass M?

Practice question from Gravitation (NEET Preparation Physics), with the correct answer and a step-by-step solution.

medium · MCQ · Q-84ECD3

What is the binding energy of a satellite of mass mm revolving in a circular orbit of radius rr around the Earth of mass MM?

  1. A.A
  2. B.B
  3. C.CCorrect answer
  4. D.D

Solution

The total mechanical energy of a satellite in a circular orbit of radius rr is E=−GMm2rE = -\frac{GMm}{2r}. The binding energy is the energy required to remove the satellite to infinity (i.e., making total energy zero), which is equal to −E=GMm2r-E = \frac{GMm}{2r}.

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