The figure below shows a wooden cylinder with mass m = 0.225 kg and length L = 0.600 m, with N = 50.0 turns of wire wrapped around it longitudinally, so that the plane of the wire coil contains the long central axis of the cylinder. The cylinder is released on a plane inclined at an angle ? to the horizontal, with the plane of the coil parallel to the incline plane. If there is a vertical uniform magnetic field of magnitude 0.250 T, what is the least current i through the coil that keeps the cylinder from rolling down the plane?