alleryThe parameter measuring how a rotating body's mass is distributed about the axis is the radius of:
AGraduation
BGermination
CGyration
DGradation
Answer & Solution
Correct answer: C. Gyration
1. Moment of inertia depends on how far the mass sits from the axis.
2. A single length can summarise that distribution.
3. The parameter defined as a measure of that distribution is the radius of gyration.
4. It is related to the moment of inertia and the total mass.
_Source: syllabus Physics Part I, Ch 6 'Systems of Particles and Rotational Motion'_
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