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## Homework Statement

A rigib poll of length 2L is made into a V shape so that each leg has length L. What is the period of oscilation for small angle. The angle between the legs is 120 degrees

## Homework Equations

3. The Attempt at a Solution [/B]

I tried to calculate the period by imagining a rigid poll that would take the originals place. Since the lenght of one leg is L, the poll which would take the place is located in the middle and of lenght ##L/2## since its 30,60,90 triangle, Moment of inertia is ##I=\frac{M(L/2)^2}{3}## and that nakes the period ##T=6.28*\sqrt{\frac{I}{Mg(L/2)}}## and that just doesnt seem right? What do you think?