All Questions
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Dual of Newtonian gravitational field
In the static state, the laws of Newtonian gravity and Coulomb force have exactly same formulas,
$$F = K \frac{A_1A_2}{r^2}.$$
In the electrical case, moving materials produce a field, say a dual ...
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1
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Would it be possible for a cylindrical magnet suspended vertically down from a hanging magnet to levitate in static equilibrium?
Let's assume that a cylindrical magnet is clamped by an horizontal arm extending out of the wall. The top of the magnet is its north pole and the smooth face facing down is its south pole. If I bring ...
- 15
1
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1
answer
292
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Do lifting magnets share the weight of objects they are attracting?
I've done some research and people have said the object the magnet is lifting up against gravity is exerting the same magnitude of lifting force downwards on the lifting magnet.
If whatever is ...
- 11
0
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2
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179
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A question about magnetic field lines
In the simple experiment of spraying iron filings around a magnet, why doesn't the magnetic field (provided that it is strong enough) cause the iron filings to form a $3\mathrm D$ skeleton along the ...
- 105
-4
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1
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What is exact difference between gravitational force and magnetic force? [closed]
I've read that gravitational force is due to mass only and magnetic field is due to moving charged particles.
But my question is:
what are other difference between them?
Can we set up a small ...
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