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Changes in the radius of a system result in changes in the system's:
AChemical bonds
BRotational inertia
CThe total mass
DElectric charge
Answer & Solution
Correct answer: B. Rotational inertia
1. Moving mass closer or further changes how hard it is to spin.
2. Rotational inertia depends on the distribution of mass.
3. Changes in the radius of a system change that distribution.
4. They result in changes in the system's rotational inertia.
_Source: OpenStax College Physics for AP Courses 2e (CC BY 4.0), Ch 10 'Rotational Motion and Angular Momentum', sections 10.1-10.7_
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