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With a magnet inside another hollow magnet, for example an iron rod in a hollow cylinder, the iron bar placed inside the cylinder with poles attracted to opposite poles of cylinder (likes repel opposites attract), is there also a force along the radius of the cylinder? Per the closed loop rule, the magnetic flux along the sides of the iron rod flows in opposite direction to that of the cylinder. It would seem like the magnetic flux on the inside of the cylinder "squeezes" its way past opposite flux from the iron rod (the iron rod being fixed in place along the longitudinal axis by attraction at poles), compressing it from all directions at once, repelling the iron rod with a vector towards the centre of the radial axis.

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Dino
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  • Possible duplicate : https://engineering.stackexchange.com/q/28354/10902 – Solar Mike May 14 '19 at 03:58
  • What have you done towards a solution? Measurements? Field strength? – Solar Mike May 14 '19 at 04:01
  • re: duplicate, this question is more generic, often easier the more well defined the question – Dino May 14 '19 at 04:24
  • The subject is not my expertise, I specialize in other fields, and so I use a collaborative Q&A. – Dino May 14 '19 at 04:26
  • People on here offer help when effort is shown - we are not a free homework completion service... – Solar Mike May 14 '19 at 04:26
  • The idea is based on, simply, that the magnetic flux of the inner magnet flows (seems to me) in opposite direction to magnetic flux of outer magnet. That suggests there would be a force between the two, in general. – Dino May 14 '19 at 04:27
  • Stackexchange is a free Q&A though, although yes sure not homework employees. If there was an incentivized alternative that accepted payments, I would probably use it since it would be more productive and provide better service. – Dino May 14 '19 at 04:28
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    We are not paid to solve your problems, most are here out of interest. You are most welcome to go elsewhere... – Solar Mike May 14 '19 at 04:30
  • Yes I am aware that this is not a payed service. What I said was that if there was an incentivized platform, I would probably use it because it would be superior. That was not meant as an insult, it was another way to say that I am not looking for homework completion :) – Dino May 14 '19 at 04:43
  • actually. it is more that I want to have my assumptions validated, rather than having homework done. I have done the work, as in, I am interested in whether the assumption is correct (do you see difference?). – Dino May 14 '19 at 06:58
  • so best analogy would be grading homework, but I think "homework" metaphor overall is a bit statist. – Dino May 14 '19 at 06:59
  • this question can for example be reduced to two bar magnets, side by side, with opposite polarity. https://i.imgur.com/CjiiPNF.png. do they experience a repulsive force at null point? (that is my assumption) – Dino May 14 '19 at 07:00
  • In other words, the intent is to get certainty, by having experts give their opinion which tends to be accurate. That may not be appreciated, but it is very different from looking for homework completion service :) – Dino May 14 '19 at 07:25
  • You will find that some things do not improve with exchange of money. In fact the quid for pro social economy is multiple times more efficient than markets. – joojaa May 14 '19 at 18:30
  • As much as that comment sounds nice, it is not really true. Legal systems, coordination mechanisms, and incentives, including reward incentives, as well as money etc, have improved pro-social coordination. The reason incentivized wikipedia and/or incentivized stackexchange doesn't exist is just because the technology it requires is still in its infancy, Ethereum was a good start. – Dino May 14 '19 at 21:26

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