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Question 30357
JEE Physics · Medium

Rigid Body Dynamics: JEE — MOI Application MCQ

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JEE — MOI ApplicationMediumQuestion 30357

Question

The radius of gyration of a solid sphere (radius R) about its diameter is:
  1. A
    R
  2. B
    R/√5
  3. C
    R√(2/5)
    Correct
  4. D
    R/2

Correct answer

R√(2/5)

Explanation

I = (2/5)MR² = Mk² → k² = (2/5)R² → k = R√(2/5).

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