EngiRef / Mechanical Engineering Formula
Moment of Inertia (Circle)
Moment of Inertia (Circle): Second moment of area for a circular cross-section. A Statics formula in mechanical engineering. Variables I and d, each with SI…
Statics
Specification
- Name
- Moment of Inertia (Circle)
- Discipline
- mechanical
- Category
- Statics
- LaTeX
- I = \frac{\pi d^4}{64}
- Description
- Second moment of area for a circular cross-section
- Conditions
- About the centroidal axis
- Can solve for
- I, d
- Tags
- moment, inertia, circle, section
Variables
| Symbol | Name | Unit | Si Unit | Imperial Unit |
|---|---|---|---|---|
| I | Moment of Inertia | m⁴ | m⁴ | in⁴ |
| d | Diameter | m | m | in |
Common questions
- What is the Moment of Inertia (Circle) formula?
- Second moment of area for a circular cross-section. It sits under Statics, Mechanical engineering in the EngiRef reference.
- What do the symbols in the Moment of Inertia (Circle) formula mean?
- In Moment of Inertia (Circle), I is moment of inertia in m⁴; d is diameter in m.
- When does the Moment of Inertia (Circle) formula apply?
- Moment of Inertia (Circle) holds under this condition: About the centroidal axis.