Question

rotational inertia of an object rotating about an axis becomes greater with
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decreased mass
decreased mass and decreased distance to mass concentration
increased mass
increased mass and increased distance to mass concentration

Explanation:

The formula for the rotational inertia \(I=\sum mr^{2}\), where \(m\) is the mass and \(r\) is the distance from the axis of rotation to the mass concentration. Rotational inertia increases when mass \(m\) increases and when the distance \(r\) to the mass - concentration increases.

Answer:

D. increased mass and increased distance to mass concentration