MHT CET · Physics · Rotational Motion
The angular momentum of a rotating body is ' \(L\) '. When the frequency of rotating body is tripled and its kinetic energy is made one-third, the new angular momentum becomes
- A \(\frac{1}{9} \mathrm{~L}\)
- B \(\frac{1}{3} \mathrm{~L}\)
- C 6 L
- D 9 L
Answer & Solution
Correct Answer
(A) \(\frac{1}{9} \mathrm{~L}\)
Step-by-step Solution
Detailed explanation
\(L = \frac{K}{\pi f}\) \(L' = \frac{K'}{\pi f'}\)
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