A flywheel with a moment of inertia of 49 kg * m ^{2 and a radius of 0.5 m rotates about an axis coinciding with its axis of symmetry, with a constant angular velocity of 30 rad / s. A constant tangential force is applied to the rim of the flywheel 196 N. For what time will the angular velocity of the flywheel double? How many turns does the flywheel make during this time?}

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