Why is use of the earth's magnetic field not a feasible means of flight?

AI Thread Summary
The Earth's magnetic field is not a feasible means of flight due to its relatively weak strength compared to the forces required for lift. While the magnetic field does exist, it does not exert enough force to counteract gravity effectively for flight purposes. Additionally, the magnetic field's influence on objects is minimal, as evidenced by the lack of significant effects on everyday electronics. The discussion highlights the limitations of using magnetic fields for practical flight applications. Overall, the consensus is that alternative methods of flight are necessary due to these constraints.
eku_girl83
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The people on this forum where so helpful with my last problems that I'm posting again! Here are the two I'm having trouble with:
1) What must be the charge (sign and magnitude) of a 1 g particle for it to remain stationary when placed in a downward-directed electric field of magnitude 530N/C? I know the equation E=F/q, but I'm not sure how to apply it in this case.
2) Why is use of the Earth's magnetic field not a feasible means of flight?

Thanks again :)
 
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does the Earth's magnetic field have that greater effect on us?? i would have thought not otherwise our watches and electrical equipment would be affected. However the field lines are always represented as going out of the earth. hmmm this is quite a conundrum. I would say that the Earth's magnetic field is not strong enough RELATIVELY to be used for flight.
 
Thread 'Motional EMF in Faraday disc, co-rotating magnet axial mean flux'

Thread 'Motional EMF in Faraday disc, co-rotating magnet axial mean flux'

So here is the motional EMF formula. Now I understand the standard Faraday paradox that an axis symmetric field source (like a speaker motor ring magnet) has a magnetic field that is frame invariant under rotation around axis of symmetry. The field is static whether you rotate the magnet or not. So far so good. What puzzles me is this , there is a term average magnetic flux or "azimuthal mean" , this term describes the average magnetic field through the area swept by the rotating Faraday...
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