Determine the magnitude of the net force on the loop.

AI Thread Summary
The discussion focuses on calculating the net force on a rectangular loop wire placed near a straight wire, both carrying a current of 3.5 A. The relevant equation for force between two parallel currents is provided, but the user struggles with correctly determining the forces acting on the loop. They initially break the problem into two forces, F1 and F2, but encounter difficulties in finding the correct answer. After some deliberation, they manage to determine the direction of the forces involved. The final calculated net force is 5.1 x 10^-6 N.
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Homework Statement


A rectangular loop wire is placed next to a straight wire, as shown in the figure. There is a current of 3.5 A in both wire.

Figure: http://www.flickr.com/photos/65980314@N06/6020832477/


Homework Equations


F = ((mu(0)*I1*I2) / (2*pi*r)) * L
force in terms of current

The Attempt at a Solution



I broke it down to two forces F1 and F2 and then added them but I'm not getting the correct answer.
 
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IHave said:
I broke it down to two forces F1 and F2 and then added them but I'm not getting the correct answer.
In what direction does each force act?
 
oh okay, i guess I am still having trouble with determining the direction of the different fields. i was able to figure it out.

answer: F = 5.1x10^-6 N
 

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