APFIVE Rotational Inertia of a Disk With a Hole
A uniform circular disk has a small circular hole cut out of it. The hole’s center is located at half the radius from the disk’s center. How does this modification affect the rotational inertia about an axis through the disk’s center?
A
Decreases only by the hole’s rotational inertia
B
Increases due to the asymmetric mass distribution
C
Decreases by the hole’s I plus md²
D
Remains unchanged if the hole is small enough
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