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A uniform rod of mass m and length l is hinged at its mid point in such a way that it can rotate in the vertical plane about a horizontal axis passing through the hinge.One of its ends is attached to a string of spring constant k which is unstreched when the rod is horizontal. If this end is now given a small displacement and released then angular frequency of the resulting motion is

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1 Answer

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by (65.0k points)

The correct option will be (a) sqrt(k/m)

Hint:-  use the spring formula to get the answer

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