A ring of the radius r is suspended from...

A ring of the radius r is suspended from a point on its circumference. If the ring is made to oscillate in the plane of the figure, then the angular frequency of these small oscillations is

`sqrt((2g)/(3r))`

`sqrt((g)/(2r))`

`sqrt((5g)/(4r))`

`sqrt((4g)/(3r))`

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