JEE · NEET Previous Year Question

If an energy of is needed to increase the speed of a flywheel from to , then find its moment of inertia.

Topic: JEE PYQ

Answer: B. Full step-by-step solution below.

  1. A
  2. B
  3. C
  4. D

Correct answer: B

Solution

(b) Initial angular frequency,
Final angular frequency, According to question,

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