A metal rod of length { = 0.8m and mass m = 4kg is attached to two springs (see Figure 1). The rod is placed in a horizontal position and perpendicular to a magnetic field such that the rod and the magnetic field span a plane that is parallel to the ground. The spring constant of the two springs is k = 50N mm and the magnetic field is B = 0.44T. Determine the necessary current / flowing through the rod, such that the springs are displaced three times as much from their "relaxed" position. O O O Figure 1: Wire hanger in a vertical magnetic field