A uniform thin rod of length $l$ is suspended from one of its ends and is rotated at $f$ rotations per second. The rotational kinetic energy of the rod will be
A uniform thin rod of length $l$ is suspended from one of its ends and is rotated at $f$ rotations per second. The rotational kinetic energy of the rod will be
- A
$\frac{2}{3}{\pi ^2}{f^2}m{l^2}$
- B
$\frac{4}{3}{f^2}m{l^2}$
- C
$4{\pi ^2}{f^2}m{l^2}$
- D
Zero
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