EngiRef / Mechanical Engineering Formula
Parallel Axis Theorem
Parallel Axis Theorem: Moment of inertia about parallel axis. A Statics formula in mechanical engineering. Variables I, Ic, A and d, each with SI and imperial…
Statics
Specification
- Name
- Parallel Axis Theorem
- Discipline
- mechanical
- Category
- Statics
- LaTeX
- I = I_c + Ad^2
- Description
- Moment of inertia about parallel axis
- Can solve for
- I, Ic, A, d
- Tags
- parallel, axis, theorem, inertia, transfer
Variables
| Symbol | Name | Unit | Si Unit | Imperial Unit |
|---|---|---|---|---|
| I | Moment of Inertia | m⁴ | m⁴ | in⁴ |
| Ic | Centroidal Moment of Inertia | m⁴ | m⁴ | in⁴ |
| A | Area | m² | m² | in² |
| d | Distance from Centroid | m | m | in |