If there is a satellite in geosynchronous orbit

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SUMMARY

The discussion centers on the relationship between centripetal force and gravitational force for a satellite in geosynchronous orbit. It establishes that the centripetal force (Fc) acting on the satellite is equal to the gravitational force (Fg) exerted by the Earth. The relevant equations include Fg = G(m1)(m2) / r^2 and Fc = 4(pi^2)(m)(r) / T^2, where G is the gravitational constant, m1 and m2 are the masses of the Earth and satellite, r is the distance from the center of the Earth, and T is the orbital period. The conclusion confirms that for a satellite in a stable circular orbit, these forces are indeed equal.

PREREQUISITES
  • Understanding of Newton's law of gravitation
  • Familiarity with centripetal force concepts
  • Knowledge of orbital mechanics
  • Basic proficiency in algebra and physics equations
NEXT STEPS
  • Study the derivation of the gravitational force equation Fg = G(m1)(m2) / r^2
  • Explore the concept of geosynchronous orbits and their significance
  • Learn about the implications of centripetal force in different orbital scenarios
  • Investigate the effects of varying mass and radius on satellite motion
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Students studying physics, educators teaching orbital mechanics, and anyone interested in satellite dynamics and gravitational interactions.

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Homework Statement



Does the centripetal force equal the gravitational force?

Homework Equations



Fg = G(m1)(m2) / r^2
Fc = 4(pi^2)(m)(r) / T^2

The Attempt at a Solution



I have the mass of a satellite in geosynchronous Earth orbit. The period of Earth's orbit, and the Earth's radius and mass.
I need to find the distance of the satellite above earth.

Is it right to set Fc = Fg?
 
Physics news on Phys.org
As long as the satellite is traveling in a circular orbit around the Earth, the gravitational force provides the centripetal force. The geosynchronous orbit gives you the period time of the satellite.
 

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