Write Newton's second law for a system of particles performing rotational motion.

(N/A) For a system of particles performing rotational motion about a fixed axis,Newton's second law is expressed in terms of torque and angular acceleration.
The relationship is given by the equation: $\tau_{ext} = I \alpha$
Where:
- $\tau_{ext}$ is the net external torque acting on the system about the axis of rotation.
- $I$ is the moment of inertia of the system about the same axis.
- $\alpha$ is the angular acceleration of the system.
This equation is the rotational analogue of Newton's second law for linear motion,$F = ma$.