Can a Gravity Machine Harness Energy in a Frictionless Universe?

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Discussion Overview

The discussion revolves around the feasibility of harnessing gravitational energy mechanically in a hypothetical frictionless universe. Participants explore whether it is possible to extract energy from gravity through mechanical means, such as a mass falling onto a spring to generate electricity, and whether this could lead to excess energy production.

Discussion Character

  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • One participant questions the possibility of harnessing gravity mechanically, asking if energy can be extracted from a falling mass in a frictionless environment.
  • Another participant asserts that gravity is a conservative force, implying that it cannot be harnessed for excess energy production.
  • A request for clarification is made by a participant who expresses difficulty in understanding the explanation provided.
  • A suggestion is made that a magnetic field could potentially allow for energy extraction, although this is not universally accepted.
  • Hydroelectric power is mentioned as a method of harnessing energy, with a participant noting that it indirectly derives from solar energy rather than gravity alone.
  • One participant explicitly states that free-energy machines using magnets are not feasible, reinforcing the conservative nature of energy in these contexts.

Areas of Agreement / Disagreement

Participants generally disagree on the possibility of harnessing gravitational energy for excess energy production. While some assert it is impossible due to the conservative nature of gravity, others propose alternative methods or challenge the initial premise.

Contextual Notes

The discussion includes assumptions about the nature of gravity and energy conservation, and the feasibility of alternative energy extraction methods remains unresolved.

Mattius_
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Can one harness gravity mechanically? meaning, in a frictionless universe, can we have an object undergo the forces of gravity, extract energy via a generator (ex. mass falling onto a spring which generates electricity), and reciprocate this while also producing excess energy? Is this possible, impossible, or still in debate?
 
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No, not even in a frictionless universe. Gravity is a conservative force.

- Warren
 
can you please explain this a little more, i am not very smart...
 
Lol a rather simple solution, not exactly what i was looking for, i was taking situation exemplified in hyperphysics with an additional force of gravity in only one direction... can we neutralize gravity for one path?
 
Nope.
 
you can with a magnetic field...
 
How about hydroelectric power from a waterfall ;)
 
Hydroelectric power is really just indirectly harnessing energy from solar radiation - having it evaporate water, lift it, and then letting it fall under gravity.
 
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And no, Mattius_, you cannot build a free-energy machine with magnets either.

- Warren
 

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