Find the rotational inertia of a thick ring of mass M and innerandouter radii R1 and R2.
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Two uniform circular discs having the same mass and same thickness but different radii are made from different materials .Which one of the disc have smaller rotational inertia and why?
What is the moment of inertia of the aluminum ring, Iring, shown in the figure where mass M = 61 grams; and inner and outer radii, a = 6.35 cm and b = 7.6 cm, respectively.