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## Homework Statement

What is the moment of inertia of an 8 kg, 40 cm diameter disk for rotation through the edge of the disk?

## Homework Equations

[tex]I = \frac{1}{2}MR^2[/tex]

## The Attempt at a Solution

Inertia at the center of the disk would be [tex]I = \frac{1}{2}MR^2[/tex], right? I'm not sure what the right equation for inertia at a point on the edge of a disk would be.