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## Homework Statement

A rod of length ##2L## is bent at point of its middle so that the rods now created are in a upside V shape and the angle between them is ##120°##. The system oscilates. Find the expression of the period of oscilation.

## Homework Equations

3. The Attempt at a Solution [/B]

I thought of one thing. Since the angle is ##120°## the system oscilates the same way as a normal pendulum rod of length ##L/2##. If that is true all that follows is the center of mass which for a rod would be ##L/2## i think. Therefore we have imagined a pendulum of length ##L/6##. Its period is ##T=2*\pi * \sqrt{\frac{L}{6g}}##. Is this correct?