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  1. Horder

    How do I accurately measure moment of inertia of a small motor rotor

    I need to measure the moment of Inertia of a 20mm dianeter rotor. I have calculated the inertia at 3500gmm^2 using the following equation to sum the components (cylinders): Inertia, I = m(r1^2 + r2^2)/2 I've measured it by timing it rolling down a slope: Inertia, I = mgr^2t^2Sinq/2L - mr^2...

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