Can a buoyant object achieve perpetual motion?

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SUMMARY

A buoyant object cannot achieve perpetual motion, as established by the laws of thermodynamics. Attempts to create perpetual motion machines using buoyancy typically overlook the energy required to pump air underwater. The discussion emphasizes that perpetual motion is impossible, and any designs or theories suggesting otherwise are fundamentally flawed. The consensus is clear: perpetual motion machines are not feasible.

PREREQUISITES
  • Understanding of the laws of thermodynamics
  • Basic knowledge of buoyancy principles
  • Familiarity with energy transfer concepts
  • Awareness of perpetual motion machine theories
NEXT STEPS
  • Research the laws of thermodynamics in detail
  • Explore buoyancy and its applications in physics
  • Study historical attempts at creating perpetual motion machines
  • Learn about energy conservation and its implications in mechanical systems
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Physicists, engineering students, inventors, and anyone interested in the principles of motion and energy conservation.

bluegold
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Would a buoyant object be able to achieve perpetual motion or even past perpetual motion if it were in a machine as portrayed below?https://mail.google.com/mail/?ui=2&ik=93e42fc0d8&view=att&th=12ca0732e35fe2f9&attid=0.1&disp=inline&realattid=f_gh5sgy4n0&zw
 
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You can't post images from attachment like this.

But regardless, no. There is no such thing as perpetual motion. Usually, the attempts involving buoyancy ignore the fact that it takes energy to pump air under water. Since I can't see that image, I can't tell you if that's what it is, but that'd be my blind guess.
 
And since we do not discuss perpetual motion machines here, this is a good spot to finish this thread.
 

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