APFIVE Rotational Kinetic Energy of a Modified Disk
A uniform disk of mass M and radius R has rotational kinetic energy K when rotating at angular velocity ω. What would be the rotational kinetic energy of the same disk if half of its mass were removed from the outer portion (r > R/√2) while maintaining the same angular velocity?
A
K/4
B
K/8
C
3K/4
D
K/2
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