Pull of Gravity.Where it starts?

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The discussion centers on the origin of Earth's gravitational pull and its influence on objects in space. Gravitational force begins to act on objects at an infinite distance, as described by the formula GMm/(r*r). However, the Earth's gravitational influence becomes dominant at a certain proximity, which is not clearly defined in the conversation. The participants also explore the observable range of Earth's gravity, extending up to approximately 2.75 billion light years. Additionally, there are inquiries into the implications of quantum mechanics on gravitational force, particularly regarding minimum energy levels and the concept of gravitons.
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Pull of Gravity...Where it starts?

hi...

Juz curious... when does the gravitational pull of Earth starts?

eg:
Let's say a comet/ a space rock ...It will travel slowly in space but once it is caught by gravity, it will accelerate, right? Yeah... so when does that happen.What distance from Earth will the Earth's gravitational force starts to act on the subject.
 
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Infinitely far away, because the force between the bodies is GMm/(r*r). If your question was meant to be when the force between Earth and the comet is the dominant gravitational force, well that's an entirely different question.
 
Well, technically, the affect of Earth's gravity field is only observable out to a distance of about 2.75 billion light years.
 
Would quantum mechanics dictate a zero-point minimum gravity? Does the graviton have a minimum energy level so that there is a mimimum gravity force?
 

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