uploaded imageThe rectangular loop of wire shown in the figure has a mass of 0.14 g per centimeter of length and is pivoted about side ab on a frictionless axis. The current in the wire is 8.0 A in the direction shown. Find the magnitude of the magnetic field parallel to the y-axis that will cause the loop to swing up until its plane makes an angle of 30.0 ^\circ with the yz-plane.


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