Lecture12

# Lecture12 - Chapter 11 Rolling, Torque, and Angular...

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Chapter 11 Rolling, Torque, and Angular Momentum 1 PHYS 2101, P.M.Shikhaliev LSU, Fall 2010

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11.9. The Angular Momentum of a System of Particles The total angular momentum L of the system is the (vector) sum of the angular momentums l of the individual particles (here with label i): With time, the angular momentum of individual particles may change because of interactions between the particles or with the outside. Therefore, the net external torque acting on a system of particles is equal to the time rate of change of the system’s total angular momentum L . 2 PHYS 2101, P.M.Shikhaliev LSU, Fall 2010
11.10. Angular Momentum of a Rigid Body 3 PHYS 2101, P.M.Shikhaliev LSU, Fall 2010

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11.10. Similarities in Translational and Rotational Motions 4 PHYS 2101, P.M.Shikhaliev LSU, Fall 2010
If the net external torque is zero, the angular momentum L of the closed system remains constant. 5

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## This note was uploaded on 09/30/2010 for the course PHYS 2101 taught by Professor Grouptest during the Spring '07 term at LSU.

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Lecture12 - Chapter 11 Rolling, Torque, and Angular...

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