Решение задачи по физике раздел 39 пункт 24 электро

24. two smooth copper bars set at an angle α to the horizontal slides by gravity constant velocity c copper jumper mass m. Tires are closed on the resistance R. The distance between the tires L. The system is in a uniform magnetic field induction B perpendicular to the plane in which the bridge moves. Resistance tires, jumpers and sliding contacts, as well as the self-inductance of the circuit is negligible. Find the speed jumpers.

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