3 ms·
I don't get it? Why would something like below not work: ________ SSSSSSSS NNNNNNNN NNNNNNNNNNNNNNNNNNNN SSSSSSSSSSSSSSSSSSSS
by tocomment 18y ago
I don't get it? Why would something like below not work:
________
SSSSSSSS
NNNNNNNN
NNNNNNNNNNNNNNNNNNNN
SSSSSSSSSSSSSSSSSSSS
Top magnets are glued to a board, a larger area of magnets are glued to the floor. This would be in two dimensions. Surely the magnets wouldn't have the strength to flip the board, so how is that not stable?
- mtinkerhess 18y agoIANA physicist, but how could magnets be strong enough to lift the board off the ground but not strong enough to flip it?
- tocomment 18y agoI thought of that, but what about magnets barely strong enough to lift the board, maybe 1cm or levitation or something?
- mtinkerhess 18y agoThen wouldn't the board start to destabilize until an edge hit the ground? So it wouldn't be floating exactly, just sort of eerily resting.
- tocomment 18y agoTrue. Good point. What if you curved the bottom piece into a slight dish shape?
- olefoo 18y agoLateral stability; the board will slide until it reaches the edge and then it will fall off or flip over. Unless you have some sort of lip to catch the suspended part, it's not going to be stable. Or you could use a tension member to hold it in place, although that breaks the aesthetic slightly.