A long cylinder of type II superconductor with mass M = 25 g and height l = 10 cm is suspended on a thin thread. A magnetic field H = 104 Oe > Hc1 is applied along the cylinder axis such that the induction B ~ m0H. At first, when the temperature of the cylinder was T Tc, the cylinder was at rest, and then the temperature rose above the critical temperature. Find the steady-state angular frequency of rotation of the cylinder. The penetration depth of the magnetic field is l = 10-7 m, the density of superconducting electrons is ns = 1028 m-3.

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