25. The magnetic field strength of 50 A / m. This field is freely rotatable frame flat area of 10 cm2. The plane of the frame at the start of parallel lines of the magnetic field. Then, a short time frame skipped current 1A and frame received angular acceleration 100 to -2 degrees. Assuming that the torque constant, find the moment of inertia of the frame.

Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)