Force on a Magnet - Current Carrying Wire

AI Thread Summary
The discussion revolves around calculating the force on a bar magnet placed near a current-carrying wire. The magnet has a pole strength of 0.1 Wb and is positioned 2 cm and 6 cm from the wire, with a current of 6 Amps flowing through it. The user attempts to apply the formula F = BIl and B = μ0I/2πR but questions whether the variables are correctly defined. Clarification is sought on how to determine the force on a magnetic pole due to the magnetic field generated by the wire. The conversation highlights the need for accurate application of magnetic force equations in this context.
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Homework Statement



A bar magnet, with pole strength 0.1 Wb and magnetic length (i.e. distance between the poles) of 5 cm, is placed so that one pole is 2 cm and the other 6 cm from a long, straight wire carrying a current of 6 Amps. The magnet lies in a plane perpendicular to the wire. Find the force on each pole of the magnet (indicating its direction on a diagram). What is the torque on the magnet about the axis of the wire

Homework Equations



F=qvB
F=BIl
B=\mu0I/2\piR
\phi=BA

The Attempt at a Solution



So I said:

F=BIl and B=\mu0I/2\piR, therefore:

F=\mu0I2l/2\piR

In this formula is l the distance between the poles and R the distance the pole is from the wire? Any help would be much appreciated.
 
Physics news on Phys.org
Neither - afaict it's the wrong equation for the problem.
How do you determine the force on a magnetic pole due to a magnetic field?
 

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