All Questions
Tagged with newtonian-gravity electromagnetism
73
questions
15
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3
answers
5k
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Is it possible to convert gravitational energy directly into electrical energy?
It is possible to produce strong gravitational accelerations on the free electrons of a conductor in order to obtain electrical current. This allows the conversion of gravitational energy directly ...
- 1,070
1
vote
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
votes
1
answer
54
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Question about applying Maxwell's Equations to analyze a copper shaft and magnetic bearing
fellow physics people I have a question regarding the mathematics behind how a magnet will slow down as it falls through a copper pipe. I am aware of the mechanism in which this works, the falling ...
- 9
3
votes
2
answers
287
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Free electrons attracted by Earth's gravity
Free electrons in a metal are attracted by gravity towards Earth. So why don't they lay down to the bottom of the conduit, like sediment at the bottom of a river?
- 39
0
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1
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Newton's equal and opposite force law
Is the equal and opposite force of Newton's third law caused by electromagnetic force or by the mass between the objects?
I was given the explanation that if I am standing on an edge of a cliff, it is ...
user232620
2
votes
2
answers
81
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Gravity, forces, spacetime, acceleration conundrum
If gravity is not a force but rather spacetime curvature, why when standing on a scale do we say the "normal force" the actual force that the scale is measuring? Is the normal force caused ...
user232620
0
votes
0
answers
66
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What is the lengthscale where electric force and gravity are comparable?
Basically the title. I came across this question while going through old exams. I thought that electromagnetism is stronger than gravity by 40 orders of magnitude more or less, at all scales, so this ...
- 716
2
votes
3
answers
347
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Can we construct a logically self-consistent relativistic theory of gravity just by tweaking EM?
This question considers a modification of classical E&M where we simply reverse the relative sign in Maxwell's equations and change the "$q$" in the Lorentz force law to an "$m$&...
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Is the theory of electromagnetism very incomplete in physical interpretation? [duplicate]
Just like in Newtonian gravity, do we simply accept charge being naturally attracted to the opposite charge with a very similar Newtonian style force? (Coulomb)
Shouldn't there be a meaningful theory ...
0
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0
answers
43
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Why the force is inversly proportional to the square of distance? [duplicate]
Lesser the distance higher the force of attraction.but why it is the square of distance?And also the reason i guess for this force is the attraction force between atoms ( electrons of one atom and ...
- 21
4
votes
4
answers
366
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Electromagnetism versus gravity
I am wondering why classical electromagnetism predicts (classical, wavelike) photons , but classical Newtonian gravity does not predict analogous wave-like solutions (as far as I am aware)?
Stated ...
- 41
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votes
1
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89
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Different answers for the same problem, Einstein's relativity vs Newton's gravity [duplicate]
I had struggle to find the answer to this question:
Imagine two charged identical particles, one stationary relative to earth, and the other one is free falling (to earth).
We know that an accelerated ...
3
votes
1
answer
129
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Numerical solution to the relative gravitational time dilation of induced dipolar gravitational fields
In gravitoelectromagnetism, an approximation to general relativity in the weak field limit, Einstein's equations simplify into a form very similar to Maxwell's equations. In this field, traditional ...
- 100
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0
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In addition to $K_e/K_m = c^2$ (due to James Clerk Maxwell), are the constants that arise from $G/K_m$ and $G/K_e$ also limits?
Prior to James Clerk Maxwell we understood there to be three laws:
$$\text{Gravity: }\;\;\; F_g= G \frac{m_1m_2}{r^2}\hat{r}$$
$$\text{Electricity: } F_e= K_e \frac{q_1q_2}{r^2}\hat{r}$$
$$\text{...
3
votes
4
answers
393
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How strong would the electromagnetic field of the earth and the planets would have to be, in order to mimic the effects of gravity? [closed]
How strong would the combined forces of electromagnetism on the earth and planets need to be, to mimic, and therefore, replace gravity?
- 43