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Three identical thin rods, each of length L and mass m, are welded perpendicular to one another as shown below.

Three identical thin rods, each of length L and mass m, are welded perpendicular to one another as shown below. The assembly is rotated about an axis that passes through the end of one rod and is parallel to another. Determine the moment of inertia of this structure. (Answer in terms of m and L.)
- for my answer i go t 2Ma^2 but this is not right?

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