Friday, May 26, 2017

orbital motion - How intense a magnetic field would it take to keep an hypothetical iron-made moon orbiting around it?


The intention of the question is to provide an example of the weakness of gravity.


I imagine a horseshoe magnet located at the Earth's centre (remove the Earth), and a ferromagnetic moon. How intense would the magnetic field need to be to keep such a moon in orbit at the same distance that the moon is from the Earth?




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