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Physics 111: Elementary Mechanics – Lecture 10

Physics 111: Elementary Mechanics – Lecture 10. Carsten Denker NJIT Physics Department Center for Solar–Terrestrial Research. Parallel-Axis Theorem.

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Physics 111: Elementary Mechanics – Lecture 10

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  1. Physics 111: Elementary Mechanics – Lecture 10 Carsten Denker NJIT Physics Department Center for Solar–Terrestrial Research

  2. 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 Center for Solar-Terrestrial Research

  3. Torque The ability of a force to rotate a body depends not only on its tangential component , 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! Line of Action Moment Arm Center for Solar-Terrestrial Research

  4. Newton’s 2nd Law for Rotation Radian measure Proof Center for Solar-Terrestrial Research

  5. Work and Rotational Kinetic Energy Work–kinetic energy theorem Work (rotation about fixed axis) Work (constant torque) Power (rotation about fixed axis) Center for Solar-Terrestrial Research

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