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Chapter 10: Rotation Rotational Variables Radian Measure Angular Displacement Angular Velocity Angular Acceleration Constant Angular Acceleration Equations of motion for constant angular acceleration. Are angular quantities vectors? Kinetic Energy of Rotation (rotational inertia) (kinetic energy) System of Particles Solid Body Rotational Inertia Parallel-Axis Theorem Let h be the perpendicular distance between the given axis and a parallel axis through the center of mass. If Icom 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 The ability of a force F to rotate a body depends not only on its tangential component Ft, but also on just how far from the pivot point the force is applied. Line of Action Moment Arm The unit of the torque is Nm! Do no use J! Newton’s nd 2 Law for Rotation Radian measure Proof Work and Rotational Kinetic Energy Work–kinetic energy theorem Work, rotation about fixed axis Power, rotation about fixed axis Work, constant torque Sample Problems 10-8, 10-10, 10-11