Dievsky V.A. - Solution of problem D2 variant 7 (D2-07)

Dievsky V.A. - Solution of problem D2 variant 7 (D2-07)

D2-07 Dievskiy

The rotor of the electric motor rotating at a certain angular velocity begins to be retarded by forces of aerodynamic resistance, the moment of which is equal to M = 12ω2. The moment of inertia of the rotor relative to the axis of rotation is J = 150 kg m2. Determine the angle at which the rotor rotates until the moment when its angular velocity is reduced by half.

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