# The length of a wire is l1 when tension is 4F and l2 when the tension is 5F. Then its length when the tension is 9F would be

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A thin circular ring of mass ‘M’ and radius ‘R’ is rotating about its central axis with angular velocity ‘ω’. Four point objects each of mass ‘m’ are attached gently to the opposite ends of two perpendicular diameters, the angular velocity of the ring with the same axis is given by