# Time period of conical pendulum!

A small object of mass $$m$$ is tied to string of length $$l$$ and is whirled round in a horizontal circle of radius $$r$$ at a constant speed. The centre of the circle is vertically below the point of support. What is the time period of the rotations in terms of $$g$$, $$r$$ and $$\theta$$ (where $$\theta$$ is the angle made by the string with the vertical)?

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