Q130 / 160 · AP EAMCET 2025 (23 MAY SHIFT 2) · Physics

A circular disc of mass 20 kg and radius 1 m is rotating about an axis passing through its center and perpendicular to its plane with an angular velocity of $2 \mathrm{rad} \mathrm{s}^{-1}$. Then the rotational kinetic energy of the disc is

A
100 J
B
50 J
C
75 J
Correct answer
D
20 J

Hence, the correct answer is option: 'D'.

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