Parallel-Axis Theorem Let h be the perpendicular distance between the given axis and a parallel axis through the center of mass. If I com is the rotational inertia of the body about the parallel axis that extends through the body’s center of mass, then the rotational inertia I about the given axis is
Torque Line of Action Moment Arm The ability of a force F to rotate a body depends not only on its tangential component F t, but also on just how far from the pivot point the force is applied. The unit of the torque is Nm! Do no use J!
Newton’s 2 nd Law for Rotation Radian measure Proof
Work and Rotational Kinetic Energy Work–kinetic energy theorem Work, rotation about fixed axis Work, constant torque Power, rotation about fixed axis