Rotational Inertia of a Disk with a Hole
A circular section of radius R/4 is removed from a uniform thin disk of mass M and radius R. The center of the removed section is located at a distance R/2 from the center of the original disk. What is the approximate percentage decrease in the rotational inertia of the disk about an axis passing through its center and perpendicular to its plane?
A
3.5%
B
0.4%
C
6.25%
D
1.6%
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