Equations
Newton's second law for rotation
Dynamics · id newton_second_rotation
\tau = I \alpha
| Symbol | Quantity | Unit | Meaning | Usual range |
|---|---|---|---|---|
tau | net torque | N*m | Net torque about the axis | 0 to 1e+07 |
I | moment of inertia | kg*m^2 | Rotational inertia about the axis | 1e-06 to 1e+09 |
alpha | angular acceleration | rad/s^2 | Rate of change of angular velocity | 0 to 100000 |
Assumptions
- Rigid body rotating about a fixed axis
Valid when
- No extra conditions.
Found by
Questions with these words retrieve this equation: rotation, torque, angular acceleration, moment of inertia, spin up, flywheel.
Source
OpenStax University Physics Volume 1, Chapter 10 (reference; entry written by the project). License: MIT. Entry confidence: 0.99.