Solution of the D2 B22. After switching off the gas turbine rotates with angular velocity w0 = 6 rad / s, is hampered by the aerodynamic drag, which currently M1 = 15w2, and frictional forces in the bearings, which are currently M2 = 130 Nm. The moment of inertia about the axis of rotation of the turbine is equal to J = 120 kgm2. Determine the number of revolutions of the turbine after the start of braking until standstill.

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