Comparing Total Energy of Satellites in Different Orbits: Magnitude vs. Sign?

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Homework Help Overview

The discussion revolves around comparing the total energy of two satellites, A and B, in different orbits around the Earth, specifically focusing on the implications of their distances from the Earth and the associated energy calculations.

Discussion Character

  • Exploratory, Assumption checking, Conceptual clarification

Approaches and Questions Raised

  • The original poster attempts to determine whether to consider only the magnitude of total energy or the negative sign in their calculations. Other participants question the relevance of potential energy and whether the masses of the satellites are the same.

Discussion Status

The discussion is ongoing, with participants exploring different aspects of energy calculations and questioning the assumptions made regarding the satellites' masses and energy types. No consensus has been reached yet.

Contextual Notes

There is a focus on the definitions and implications of total energy in the context of gravitational systems, with specific attention to the formula provided by the original poster. The relevance of potential energy in comparison to total energy is also under consideration.

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Homework Statement


If two satellites A and B are orbiting the Earth out of which A is closer to the Earth then the total energy of which Earth plus satellite system is lesser?

Homework Equations

The Attempt at a Solution


Should I consider only the magnitude while comparing using the formula total energy= -(GMm/2R) or also take the negative sign into consideration?
 
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Are the masses of A and B the same?
 
Should you be considering only the potential energy of the satellites? What else is there?
 

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