Concept explainers
To identify: Whether the satellite is closer or farther from the Earth when its speed is greatest.
Answer to Problem 12A
The speed of satellite is greatest when closer to earth and least when farther from earth.
Explanation of Solution
Introduction:
The orbital speed equation of a satellite around the Earth is
A satellite revolves in an elliptical pathway. It is observed from the above relation that velocity is inversely proportional to the orbital distance. So, when the satellite goes away from the Earth the speed will be less and when it comes near the Earth, the speed will be more.
Conclusion:
Therefore, a satellite speeds up as it comes closer to Earth .
Chapter 14 Solutions
Conceptual Physics: The High School Physics Program
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