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NEETPhysicsRotational Motion

What is the angular speed of the child when he folds his hands back, reducing his moment of inertia to 2/5 times the initial value, while standing on a turntable rotating at 40 rev/min?

Options

  1. A100 rev/min
  2. B64 rev/min
  3. C50 rev/min
  4. D80 rev/min

Correct answer

A. 100 rev/min

Step-by-step solution

Correct Option is : (A) 100 rev/min

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