Current-Carrying Wire/Magnet Question

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AI Thread Summary
In the discussion about a current-carrying wire between magnetic poles, the first question confirms that side X of the wire will be forced upward, as determined by the right-hand rule. The second question raises uncertainty about how far the wire will rotate before stopping, with participants noting that it cannot rotate infinitely. The consensus suggests that once the wire exceeds 90 degrees, the direction of the force changes, leading to a stop due to gravitational effects. The interaction between the wire and the magnetic field is also considered crucial for understanding the forces at play. Overall, the key takeaway is that the wire's rotation is limited by the changing forces acting on it.
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Homework Statement


http://img227.imageshack.us/img227/4773/picture286zs7.png
The illustration shows a current-carrying wire between magnetic poles. The arrows in the illustration show the direction of the current.

A. In the illustration above, will side X be forced up or down?

B. How far will the wire rotate before it stops? Why?


Homework Equations


I used the right-hand rule for the first, but I have no idea how to solve the second.


The Attempt at a Solution


The answer to A is up, correct? I tried to use the right-hand rule and it seems correct, but could someone confirm I'm on the right track?

I have no idea how to solve the second... I would assume that it will not be able to infinitely rotate, right?

Thank you soooo much for any help you could provide. :approve: Physics is not my strong subject... T.T
 
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Do you have to consider the magnetic field of the magnet only, or do you have to include interaction between the wire itself?
In my opinion (I've used the right hand also), the wire won't experience a vertical force at all.
 
When the wire turns and goes beyond 90 degrees, the force changes direction... this causes it to stop. Thats what you have to find out. The only vertical force here is gravity.
 

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