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InterviewSolution
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Two satellites of earth `S_(1)` and `S_(2)` are moving in the same orbit. The mass of `S_(1)` is four times the mass of `S_(2)`. Which one of the following statements is true?A. The potential energies of earth and satellite in the two cases are equalB. `S_(1)` and `S_(2)` are moving with the same periodC. The kinetic energy of two satellites are equalD. The time period of `S_(1)` is four times that `S_(2)`. |
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Answer» Correct Answer - B Both period orbital speed of satellite `v_(0)=sqrt((GM_(E))/r)` and time period of revolution of satellite, `T=[(4pi^(2)r^(3))/(GM_(E))]^(1//2)` are independent of mass of satellite. Therefore orbital speed and time period of revolution of both the satellites are same. Hence, option (b) is correct. The kinetic energy of satellite, `K=(GM_(E)m)/(2r)` and potential energy of a satellite, `U=-(GM_(E)m)/r` Both depends on mass of satellite, very with mass of satellite. |
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