Rotational Mechanics
PHYS 201 · Module 5
This module extends mechanics from straight-line motion to rotation. Students learn angular kinematics, torque, rotational dynamics, moment of inertia, angular momentum, and rotational conservation laws.
Lessons in this module
Rotational kinematics
Rotational kinematics describes angular position, angular velocity, and angular acceleration. This lesson develops the rotational analogs of linear motion equations.
Torque and rotational dynamics
Torque is the rotational effect of a force. This lesson explains torque, lever arms, rotational equilibrium, and Newton's second law for rotation.
Moment of inertia
Moment of inertia measures resistance to angular acceleration. This lesson explains mass distribution, common formulas, rotational kinetic energy, and the parallel-axis theorem.
Angular momentum and its conservation
Angular momentum is the rotational analog of linear momentum. This lesson explains angular momentum for particles and rigid bodies, torque, conservation, and applications.
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