Inputs
Add rectangles by width × height with centroid offsets (relative to common origin). Tool computes ΣA, centroid, I about centroidal axes, S, r.
| # | b | h | Cx | Cy | A |
|---|
Method — parallel-axis
- Centroid: ȳ = ΣAᵢ·yᵢ / ΣAᵢ.
- I_cent = Σ[ Iᵢ + Aᵢ·dᵢ² ] where dᵢ = yᵢ − ȳ.
- S = I/c, r = √(I/A).
Results
ΣA—
Centroid (x̄, ȳ)—
Ix (about ȳ)—
Iy (about x̄)—
Sx (extreme fiber)—
rx, ry—