Quest for Gravity Theory: Earth's Rotation Impact?

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Discussion Overview

The discussion revolves around the relationship between Earth's rotation and gravity, exploring whether rotation is a variable in gravity theories and if there are other forces at play in this context. The scope includes theoretical considerations and conceptual clarifications regarding gravity and rotation.

Discussion Character

  • Exploratory
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • Some participants question if Earth's rotation is a variable in the quest for a theory of gravity.
  • Others propose the idea of an invisible force causing both rotation and gravity, though this is challenged by other participants.
  • One participant asserts that rotation does not relate to gravity, particularly in the context of general gravity.
  • Another participant argues against the notion of an invisible force, stating that rotation is an inertial phenomenon while gravity is a fundamental force arising from mass.
  • There is a discussion about artificial gravity created by centrifugal motion due to rotation, which some describe as an illusion of gravity.
  • A participant notes that the gravity of a rotating Earth differs slightly from that of a non-rotating Earth, referencing the "frame-dragging" effect being confirmed by Gravity Probe B.

Areas of Agreement / Disagreement

Participants express differing views on the relationship between Earth's rotation and gravity, with no consensus reached on whether rotation is a variable in gravity theories or if other forces are involved.

Contextual Notes

Some claims depend on specific definitions of gravity and rotation, and the discussion includes unresolved aspects regarding the implications of Earth's rotation on gravitational theories.

pitchharmonics
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Does rotation of the earth, become a variable in the quest for the theory of gravity?
 
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or is there an invisible force that causes rotation to occur and gravity to exist on earth?
 
pitchharmonics said:
Does rotation of the earth, become a variable in the quest for the theory of gravity?
Rotation of the Earth has not to do with gravity, especially as we consider general gravity.
 
pitchharmonics said:
or is there an invisible force that causes rotation to occur and gravity to exist on earth?
No invisible or magical force! Rotation occurs as an inertial phenomenon (kinetic energy), while gravity is a fundamental force that results from its mass.
 
yeah gravity is a by product of mass, the more massive the object, the more gravity. now if you are talking about rotation and the creation of artificial gravity, then that's just the centrifugal motion created by the spin pushes anything towards the edges thus creating an illusion of gravity
 
I'm not sure I understand the question, but the gravity of the rotating Earth is ever so slightly different than the gravity it would have if it were non-rotating. This "frame-dragging" effect is currently being confirmed by Gravity probe B.
 

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