Magnet motor idea.

[Low-Q]

If the two halves doesn't work separately, they will not work as pair.

You must imagine how the magnets affects eachother without the shield, and then how they are separately affected by the shield.

Find the equilibrium in both cases and measure the "force x distance" in each case in both directions. If these adds up in other that zero, you can try to make a prototype.

Case1: The magnets alone will have its equilibrium when they are closest, and wants to stay there.
Case2: The magnets will find equilibrium in the middle of the shielding, and wants to stay there.

None of these separate cases have any net force left that will make the magnets start spinning.

So the sum is that the whole system will not work. 0 + 0 is 0. It is very irritating, but making the magnets "busy" with the shielding instead of eachother, doesnt change anything - unfortunatly .

Vidar

[broli]

If the two halves doesn't work separately, they will not work as pair.

You must imagine how the magnets affects eachother without the shield, and then how they are separately affected by the shield.

Find the equilibrium in both cases and measure the "force x distance" in each case in both directions. If these adds up in other that zero, you can try to make a prototype.

Case1: The magnets alone will have its equilibrium when they are closest, and wants to stay there.
Case2: The magnets will find equilibrium in the middle of the shielding, and wants to stay there.

None of these separate cases have any net force left that will make the magnets start spinning.

So the sum is that the whole system will not work. 0 + 0 is 0. It is very irritating, but making the magnets "busy" with the shielding instead of eachother, doesnt change anything - unfortunatly .

Vidar

The shielding then works in both ways. If the magnet wants to go towards the middle of the shield as you describe then this is energy gain as it accelerates meaning when it goes out it has to give this energy back. So your point is a bit mute. The real energy gain is due to the attraction of the magnets not the attraction of the shielding which is indeed equilibrium.

[Low-Q]

The shielding then works in both ways. If the magnet wants to go towards the middle of the shield as you describe then this is energy gain as it accelerates meaning when it goes out it has to give this energy back. So your point is a bit mute. The real energy gain is due to the attraction of the magnets not the attraction of the shielding which is indeed equilibrium.

You might be right, but it is hard to imagine the real deal if you don't look at the forces separately. The attraction between the magnets change with a present shielding. And the attraction to the shielding changes with the other magnet. These changes corresponds perfectly, and there is no net change done in the system that will benifit one force more than the other force.

Together the change is that the magnets will still attract even a quite a bit into the shielding, because the magnetic flux still see an easy way to complete the loop via the other magnet - in the area where the shield is at the closest. This flux is going through the shielding, jumps over to the other shielding and into the magnet there. This counterforce perfectly balance the force in "attraction area" when th magnets are in open air.

You can allways try it though.

Vidar

[Paul-R]

duplication

[broli]

I guess making a shield is not that hard. One could buy 25kg of iron powder and just poor it into a mold or w/e to get any shape you like. It might make a mess if you are near magnets with this powder  .