Question:medium

The polar moment of inertia of a circular plane of diameter about its centroid is (in \(\text{cm}^4\)):

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Always remember the direct formulas for a circle of radius \(R\) and diameter \(d\): - Planar Moment: \(I_{xx} = \frac{\pi R^4}{4} = \frac{\pi d^4}{64}\) - Polar Moment: \(J = \frac{\pi R^4}{2} = \frac{\pi d^4}{32}\)

Updated On: Jun 25, 2026

\(128\pi\)
\(156\pi\)
\(64\pi\)
\(312\pi\)

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The Correct Option is A

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The polar moment of inertia of a circular plane of diameter about its centroid is (in \(\text{cm}^4\)):

Show Hint

The Correct Option is A

Solution and Explanation

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