Build a machine that could defy gravity

  • Context: Undergrad 
  • Thread starter Thread starter outlawedge23
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    Build Gravity Machine
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SUMMARY

The discussion centers on the concept of building a machine that can defy gravity and atmospheric pressure while remaining stationary relative to the Earth's surface. A balloon is suggested as a viable solution, as it has historically been used for similar purposes, although it requires significant time to circumnavigate the globe due to the Earth's rotation. The idea of utilizing geostationary satellites is also mentioned as a more advanced alternative, albeit at a higher cost. Additionally, the concept of a balloon equipped with propulsion to counteract atmospheric movement is proposed.

PREREQUISITES
  • Basic understanding of physics principles, particularly gravity and atmospheric pressure.
  • Familiarity with balloon mechanics and buoyancy.
  • Knowledge of satellite technology and geostationary orbits.
  • Concepts of propulsion systems and their application in atmospheric navigation.
NEXT STEPS
  • Research the principles of buoyancy and how balloons operate in different atmospheric conditions.
  • Explore the mechanics of geostationary satellites and their role in modern technology.
  • Investigate propulsion systems that can counteract atmospheric movement for stationary travel.
  • Study the effects of Earth's rotation on various modes of transportation and navigation.
USEFUL FOR

Individuals interested in physics, aerospace engineering, and innovative transportation solutions, particularly those exploring concepts of gravity and atmospheric dynamics.

outlawedge23
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Hey, first off I want to say that I don't have much background with physics (that's the reason I don't know where to put this thread at, because I have no clue of what kind of physics this contains) even though I would love to. But anyways, I was thinking randomly the other day and I was wondering if there was a way to build a machine that could not only defy gravity and atmospheric pressure, but also take you around the world by not moving at all and letting the Earth revolve under you. I would like to hear some responses on some ways I could find information on this topic. I know it is probably insane in many eyes, but it just makes me wonder and I love learning more. Please help in any way and thank you for your help.
 
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Welcome to PF.

The machine you are looking for is a balloon and it has already been used for this purpose. Understand, though, that the atmosphere mostly rotates with the earth, so it takes a lot longer than 24 hours to circumnavigate the globe this way.
 
they do launch geostationary satellites so a spatial satellite is probably possible as well and would avoid the effect of rotating atmosphere, but cost a lot more.

perhaps a balloon with some sort of propulsion to move in exactly the equal and opposite direction to the atmosphere hence not moving...
 

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