Is There a Formula for Gm/r in Gravitational Potential?

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SUMMARY

The discussion centers on the formula for gravitational potential, specifically the expression -GM/r, where G represents the gravitational constant and M denotes the mass of the body creating the gravitational field. The participants clarify that while the formula resembles Coulomb's law, it is essential to use M instead of m for consistency. Gravitational potential is always negative, approaching zero as distance increases, and decreases further into negative values as one nears the mass center. This understanding is crucial for accurately applying gravitational concepts in physics.

PREREQUISITES
  • Understanding of gravitational force, specifically Fg = Gmm/r²
  • Familiarity with Coulomb's law, Fe = kQq/r²
  • Knowledge of gravitational potential energy concepts
  • Basic principles of physics related to mass and distance
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  • Research the implications of gravitational potential in astrophysics
  • Study the relationship between gravitational potential and gravitational field strength
  • Explore the mathematical derivation of gravitational potential energy
  • Learn about the applications of gravitational potential in orbital mechanics
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Students and professionals in physics, astrophysics researchers, and educators seeking a deeper understanding of gravitational potential and its applications in various scientific contexts.

concernedhuman
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Since Fg = Gmm/r2and Coulomb's law being similar to that: Fe = kQq/r2,
and we also have E = kQ/r2 and g = Gm/r2 being alike,
I was wondering if there's anything that corresponds to the potential equation kQ/r. I converted it myself and figured that it's going to be Gm/r, and I'm not sure if a formula for that exists.
 
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If m stands for the mass of the body whose gravitational field we are considering then there is, except that it is standard to use M rather than m. The quantity is -GM/r and is called Gravitational Potential. It is always negative, asymptotically approaches zero as we go towards an infinitely remote distance and it decreases ever deeper into negative territory as we approach the centre of the mass M.
 
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andrewkirk said:
If m stands for the mass of the body whose gravitational field we are considering then there is, except that it is standard to use M rather than m. The quantity is -GM/r and is called Gravitational Potential. It is always negative, asymptotically approaches zero as we go towards an infinitely remote distance and it decreases ever deeper into negative territory as we approach the centre of the mass M.
Thank you so much! This is helpful and yes I apparently didn't use the right m:frown:
 

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