Задача id8860

The horizontal platform rotates around a vertical axis with an angular velocity ω (Fig.). On the platform there is a rod AC, hinged at point A and held by a thread BO. A ball with mass m is attached to the end of the rod. Distance AB = 0.4 m, distance BC = 0.4 m, length BO = 0.3 m. Find the tension of the thread, considering the mass of the rod equal to zero.

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