Tunnel Questions: Level Travel & Salt Table Games

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Discussion Overview

The discussion revolves around the feasibility of constructing a tunnel from the Atlantic coast to the Gulf of Mexico, comparing it to a highway at sea level. Participants explore concepts of energy conservation, gravitational effects, and practical challenges in transportation systems, including comparisons to games like shuffleboard.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant questions which construction would be considered level, a straight tunnel or a highway at sea level, and proposes that a skateboard ramp-like tunnel could utilize momentum for energy efficiency.
  • Another participant states that gravitational force is conservative, suggesting that energy should theoretically be conserved if the tunnel ends at the same height, but notes that real-world factors like friction would require additional energy input.
  • A third participant identifies the game mentioned as shuffleboard and discusses the energy considerations involved in constructing such a transportation system, emphasizing the energy costs associated with construction and maintenance.
  • One participant expresses confusion about the definition of a straight line in the context of the Earth's curvature and critiques the idea of a tunnel for reducing fossil fuel consumption as impractical due to the energy demands of construction.

Areas of Agreement / Disagreement

Participants express differing views on the practicality and efficiency of the proposed tunnel system, with some supporting the theoretical aspects of energy conservation and others challenging the feasibility due to real-world energy dissipation and construction costs. No consensus is reached.

Contextual Notes

Limitations include assumptions about energy conservation in gravitational systems, the impact of friction, and the extensive energy requirements for construction projects, which remain unresolved in the discussion.

h.g.Whiz
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suppose i constructed a highway from the atlantic coast to the gulf of mexico with its finish grade at sea level . suppose instead I dug a tunnel in a straight line. which one would be considered level . and if I dug the tunnel so that it resembled a skateboard ramp could the momentum built from the first half of the trip supply the energy for the second half or would it stop in the middle due to slight decrease in gravity . I can't think of the name game that you can find at most bars in which you slide a metal puck across a wood table that's covered in salt. but anyways I was thinking that if you could replicate similar conditions on a massive scale than it would be possible to travel or transport goods real far without fossil fueled engines
 
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Gravitational force is conservative, so if your tunnel ends at the same height (or lower) than it started it will, in theory, not cost you any energy. Unfortunately in the "real" world, there are things like friction which always dissipate energy, whether you are moving up or down, so you would always have to add some energy to compensate for that.
 
The game is 'Shuffleboard', and that's wax that gets sprinkled on it... essentially the same wax that they toss onto dance floors. It's very similar to curling, except that there's a lot less effort and almost no chance of freezing your *** off during a game.
In any event, you have to look at how much energy is expended to construct the system in the first place to determine whether or not it's efficient.
 
i'm confused on the straight line. is the straight line refers to a line in the curved Earth's surface or a straight line in a plane of 2 points of consideration?

anyway, it's nearly impossible to achieve a system without energy dissipation in the real word. your idea of constructing such tunnel for that mode of transportation only so as to reduce fossil fuel consumption is just silly. construction projects are energy-guzzling endeavors from production of construction matertials to digging to erection to fabrication, maintenance etc.
 

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