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Homework Statement
Two disks have the same radius R and the same mass M, but one of the disks is twice as thick as the other. Disk A has thickness t, and disk B has thickness 2t. How does the moment-of-inertia of disk A about an axis through the center compare to that of disk B? Specifically, what is the ratio I_A / I_B ?
Homework Equations
above
The Attempt at a Solution
The moment of inertia of a disk is I=1/2MR^2 but I don't understand where the thickness would be. If the thickness has no significance in the equation then would ratio be 1:1