Summary
This section emphasizes the fundamental concepts of rotational motion and dynamics. Key points include the use of the rigid-body model, the calculation and interpretation of angular velocity, angular acceleration, torque, and moment of inertia, and the parallels with linear motion. Problems involving rotational kinematics, gravitational torque, and rolling without slipping illustrate how these concepts are applied to real-world scenarios such as spinning disks, opening doors, and designing mechanical systems.