I Can trains use permanent magnets to be propelled?

AI Thread Summary
A discussion on the feasibility of using permanent magnets for propulsion in trains, particularly maglev trains, concluded that such a system would violate the first law of thermodynamics. The referenced article about a maglev train claims to operate "power-free," but this is misleading, as the train uses permanent magnets solely for lifting, not propulsion. Critics argue that the article manipulates facts to suggest a perpetual motion-like system, which is impossible. The train's design reportedly allows for energy savings in suspension but does not eliminate the need for power in propulsion. Overall, the consensus is that while permanent magnets can assist in levitation, they cannot provide continuous propulsion without an external energy source.
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Can trains use permanent magnets to be propelled?
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No, that would be a violation of the first law of thermodynamics. The article is most likely just badly written and the train only uses the permanent magnets for lifting.
 
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What russ said.

Levitated, sure; propelled no.

The article is very manipulative. It says "...runs power-free...", and "...takes electricity out of the equation, using only magnets composed of rare-earth metal..."

But the veeerrrry last sentence in the article is a quote by an engineer that says:

"Its most prominent feature is zero-power suspension, which can save at least 31% of the energy normally needed to suspend trains using previous electromagnetic levitation technology,’ "
This is the internet in the 21st century. If it can be staged, faked or Photoshopped, it surely is staged, faked or Photoshopped.
 
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Asked and answered. Thank you all. :smile:
 
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