A copper connector of mass `m` slides down two smooth cooper bars, set at an angle `alpha` to the horizontal due to gravity (Fig). At the top the bars is equal to `l`. The system is located in a unifrom magnetic field of induction `B`, perpendicular to the plane in which the connector slides. The resistances of the bars, the connector and the sliding contacts, as well as the self-inductance of the loop, are assumed to be negligible. Find the steady-state velocity of the connector.