STANDARD Physics Energy of Satellite MCQ Question
Figure shows the variations of energy E with the orbit radius r of a satellite in circular motion. Choose the correct statement.
A shows the kinetic energy, B shows the total energy and C the potential energy of the satellite.
A and B are kinetic energy and potential energy respectively and C the total energy of the satellite.
A and B are the potential energy and kinetic energy respectively and C the total energy of the satellite.
C and A are the kinetic and potential energies and B the total energy of the satellite.
Correct Answer
Detailed Explanation
The kinetic energy of a satellite in orbit is given by K = GMm/2r, the potential energy by U = -GMm/r, and the total energy by E = -GMm/2r. In the figure, curve A represents the variation of kinetic energy with radius, curve B represents the variation of potential energy, and curve C represents the total energy.
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