`what is the moment of inertia i of this assembly about the axis through which it is pivoted?`

# what is the moment of inertia i of this assembly about the axis through which it is pivoted?

what is the moment of inertia i of this assembly about the axis through which it is pivoted?

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1/3 because the inerta for the plank itself is 1/12*m*L^2. L 2x, which becomes to 4x^2 when squared. this makes the inertia 1/12*m*4x^2 this simplifies to 1/3*m*x^2