# Lecture-16 - Rotational RotationalDynamics Lecture#16...

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otational Dynamics Rotational Dynamics Lecture #16 – Ch. 9.4 – 9.6 Physics 125–Fall 2010 Dr. Mike Melnichuk [email protected] Office: 2409 Randall Lab [email protected] ffice Hours: 2:00 :00 / Mon & Tue Rm 1416 Randall Lab Office Hours: 2:00 – 4:00 / Mon. & Tue. in Rm. 1416 Randall Lab.

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Newton’s 2 nd Law for Rotation nd Newton's 2 Law for Rotation: The NET Torque ( ) on a physical system is equal to the product between the (total) Moment of Inertia ( ) of that system about its axis net I τ G of rotation and its Angular Acceleration () . α G G G G . net all I τα = =
(Scalar) Moment of Inertia of Point Particles point-particle 2 The Moment of Inertia of a POINT Particle ( ) is equal to the product between the mass of that particle () and the squared Distance from that I mr particle to the Axis of Rotation. 2 point-particle . Im r = he Moment of Inertia of a SET The Moment of Inertia of a SET of Point Particles is the SCALAR SUM of all the moments of inertia for each individual particle.

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Lecture-16 - Rotational RotationalDynamics Lecture#16...

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