What makes the world go 'round

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Discussion Overview

The discussion revolves around the question of what makes the world go 'round, exploring both the scientific explanation involving gravitational forces and angular momentum, as well as more philosophical interpretations such as love and truth. The scope includes conceptual and theoretical aspects of physics, as well as some ambiguity in the original question regarding Earth's rotation and orbit.

Discussion Character

  • Exploratory
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • Some participants suggest that the sun's gravitational pull is responsible for the Earth's orbit, while others introduce the concept of conservation of angular momentum as a key factor.
  • One participant questions whether love could be considered a factor in what makes the world go round, contrasting it with the scientific explanation.
  • Another participant points out the ambiguity in the original question, noting that it could refer to either Earth's rotation on its axis or its orbit around the sun.
  • A later reply proposes that momentum from the Earth's formation contributes to its motion, while the sun's gravity influences its orbital path.

Areas of Agreement / Disagreement

Participants express differing views on the interpretation of the question and the factors involved in Earth's motion. There is no consensus on a singular answer, as multiple competing perspectives are presented.

Contextual Notes

The discussion highlights limitations in clarity regarding the original question and the definitions of terms like "rotation" and "orbit." There are also unresolved aspects regarding the relationship between gravitational forces and the motion of celestial bodies.

Dagenais
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Hmmm...

Some people say money, some say love.


I just want to double check. In short, what makes the world go around is basically the sun's gravitational pull which rotates the Earth and other planets around it right?


Or is love really the answer?

:wink:
 
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Originally posted by kenikov
I just want to double check. In short, what makes the world go around is basically the sun's gravitational pull which rotates the Earth and other planets around it right?


Or is love really the answer?

:wink:

Conservation of angular momentum. When a mass is trapped in the gravitational field of another body, a set of equations from Johann Kepler tell us that cirtain stable orbits can result. When this happens, as is the case with our planet, the momentum that the planet had continues until something steels it away.

Of course, I am not aware of any proofs that show that conservation of angular momentum is not love.
 
Okay, so my Sun theory was somewhat right, right?
:frown:
 
Last edited:
Originally posted by kenikov
Okay, so my Sun theory was somewhat right, right?
:frown:

The sun only tries to pull us towards its center. We go around the sun because just as much as it pulls on us, we try to run away in a straight line. An elliptical orbit results. The Earth spins on its axis because as the Earth formed, the material was caught in the earth’s gravitational field; which made it orbit the earth. As this material crashed into the forming planet, the momentum of this motion is conserved as the rotation of the planet.

So, right. You were wrong on this one. That's OK though. Most of science is about being wrong many times, but then getting it right just once in a great while.
 
Hrm, thanks.

Hanging around here will make me look so much more knowledgeable in school.
 
IMO Truth, makes everything go!.
 
Actually, the original question was very ambiguous.

"What makes the world go round?" Is that referring to Earth's rotation on it's axis or it's orbit around the world?

The later question "whether sun's gravitational pull which rotates the Earth and other planets around it right?" doesn't make it any clearer!
 
I suppose it could be looked at as a two-part question. Momentum makes the Earth go (it was in motion when it formed, and nothing has happened to stop it), and the Sun's gravity makes that "going" round (rather than straight).
 

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