moment of inertia basics

Question

Moment of inertia depends on:

RankGuru · Accepted Answer

The moment of inertia ($I$) represents a body's resistance to rotational acceleration, analogous to mass in linear motion. 
$I = \sum m_i r_i^2$
where $r_i$ is the perpendicular distance of mass element $m_i$ from the **axis of rotation**. 
- It depends on the **total mass**.
- It depends heavily on the **distribution of mass** (how far it is from the axis).
- It depends on the **choice of axis** (the same object has different $I$ for different axes).

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moment of inertia basics

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