ef152-lec-1-4 - Module 1, Lecture 4 Angular Momentum Vector...

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1 Module 1, Lecture 4 ± Angular Momentum ± Vector Cross Product EF 152 Spring, 2009 Lecture 1-4 2 Review: Fun with Clickers How is momentum calculated? A. 0.5mv 2 B. ma C. mv D. I ω Momentum is a: A. Scalar B. Vector When did conservation of momentum apply? A. Always B. No external forces C. Only in elastic collisions D. Only on Wednesdays What is d(mv)/dt ? A. Force B. Acceleration C. Impulse D. Torque EF 152 Spring, 2009 Lecture 1-4 3 Angular Momentum • Objects rotating about a fixed axis • Can relate to Newton’s second law • Conservation of momentum • Total angular momentum remains __________ if net external torque acting on system is ______. •U n i t s : ω I L = dt L d = τ EF 152 Spring, 2009 Lecture 1-4 4 Example: Clutch Given: In a clutch, a disc with I = 1.2 kg-m 2 is brought into contact with a spinning flywheel having I = 1.8 kg-m 2
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This note was uploaded on 04/07/2009 for the course EF 152 taught by Professor Ab during the Spring '08 term at University of Tennessee.

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ef152-lec-1-4 - Module 1, Lecture 4 Angular Momentum Vector...

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