Rotational Inertia in Properties of Planes and Solids Formulas

Rotational Inertia is a physical property of an object that quantifies its resistance to rotational motion about a particular axis. And is denoted by I_r. Rotational Inertia is usually measured using the Meter⁴ for Second Moment of Area. Note that the value of Rotational Inertia is always negative.

Formulas to find Rotational Inertia in Properties of Planes and Solids

fxMoment of inertia given radius of gyrationGo

fxMoment of inertia of circle about diametrical axisGo

Properties of Planes and Solids formulas that make use of Rotational Inertia

fxRadius of gyration given moment of inertia and areaGo

List of variables in Properties of Planes and Solids formulas

fx Area of Cross-Section Go

fx Radius of Gyration Go

fx Diameter of Circle Go

FAQ

What is the Rotational Inertia?

Rotational Inertia is a physical property of an object that quantifies its resistance to rotational motion about a particular axis. Rotational Inertia is usually measured using the Meter⁴ for Second Moment of Area. Note that the value of Rotational Inertia is always negative.

Can the Rotational Inertia be negative?

Yes, the Rotational Inertia, measured in Second Moment of Area can be negative.

What unit is used to measure Rotational Inertia?

Rotational Inertia is usually measured using the Meter⁴[m⁴] for Second Moment of Area. Centimeter⁴[m⁴], Millimeter⁴[m⁴] are the few other units in which Rotational Inertia can be measured.

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