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The radius of gyration relates the moment of inertia to the body's:
ATotal charge
BTotal volume
CTotal length
DTotal mass
Answer & Solution
Correct answer: D. Total mass
1. It is the distance at which the whole mass could be placed.
2. That single mass point would then have the same moment of inertia.
3. So it links the moment of inertia to the total mass.
_Source: NCERT Class 11 Physics Part I, Chapter 7, Systems of Particles and Rotational Motion._
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