Magnetic repulsion between 2 wires?

AI Thread Summary
The discussion revolves around calculating the distance of separation between two wires to achieve magnetic repulsion. The top wire, weighing 0.040 N/m and carrying a current of 30.0 A, is suspended above a second wire carrying 90.0 A. Participants are seeking clarification on the appropriate equation to use, which involves equating magnetic force per length to gravitational force per mass. The key equation provided involves constants and current values, emphasizing the need to find the magnetic force per length. The conversation encourages collaboration and problem-solving among participants.
taylor.simon
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Homework Statement



A wire with a weight per unit length of 0.040 N/m is suspended directly above a second wire. The top wire carries a current of 30.0 A and the bottom wire carries a current of 90.0 A. Find the distance of separation between the wires so that the top wire will be held in place by magnetic repulsion.

is this the right equation can can someone show me how to use it just leave the answer out please


Homework Equations



F1 / L = mg / L = (4pi x 10^-7) I2 / 2pi x distance )

The Attempt at a Solution

 
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hi taylor.simon! :smile:

(have a pi: π and try using the X2 icon just above the Reply box :wink:)

find the magnetic force per length, then the magnetic force per mass …

that has to equal the gravitational force per mass …

what do you get? :smile:​
 
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