The square loop seen in the figure has side length 1 = 0.7 m and mass m = 0.6 kg. It can rotate about the AA'- axis which lies on the horizontal z-axis. There is an external magnetic field B, with the magnitude | B| = 4T, directed vertically downward, and uniformly covering the loop. A current I = 5 A flows in the clockwise direction %3D on the loop. The sum of the gravitational torque and the magnetic torque on the loop is zero. Find the angle 0 in degrees. (Take A' |g В A g = 9.8 m/s2.)

The square loop seen in the figure has side length 1 = 0.7 m and mass m = 0.6 kg. It can rotate about the AA'- axis which lies on the horizontal z-axis. There is an external magnetic field B, with the magnitude | B| = 4T, directed vertically downward, and uniformly covering the loop. A current I = 5 A flows in the clockwise direction %3D on the loop. The sum of the gravitational torque and the magnetic torque on the loop is zero. Find the angle 0 in degrees. (Take A' |g В A g = 9.8 m/s2.)