Second Moment of Area of a Circle formulas |
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\( I_{x} \;=\; \dfrac{ \pi \cdot r^4}{ 4 }\) \( I_{y} \;=\; \dfrac{ \pi \cdot r^4}{ 4 }\) \( I_{x1} \;=\; \dfrac{ 5 \cdot \pi \cdot r^4}{ 4 }\) \( I_{y1} \;=\; \dfrac{ 5 \cdot \pi \cdot r^4}{ 4 }\) |
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Symbol | English | Metric |
\( I \) = Moment of Inertia | \( in^4 \) | \( mm^4 \) |
\( \pi \) = Pi | \(3.141 592 653 ...\) | \(3.141 592 653 ...\) |
\( r \) = Radius | \( in \) | \(mm \) |