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MIT 8 01 - Rotational Dynamics Angular Momentum

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1 Experiment 3-4: Rotational Dynamics, Angular Momentum 8.01 W10D2 Today’s Reading Assignment: MIT 8.01 Course Notes Chapter 17 Two Dimensional Rotational Dynamics Worked Example 17.11-17.12 Chapter 19 Angular Momentum Sections 19.7-19.9, Worked Example 19.8 Announcements Hand in your answers to today’s reading questions at the end of the class. Problem Set 8 due Week 11 Tuesday at 9 pm in box outside 26-152 Math Review Week 11 Tuesday at 9 pm in 26-152 Exam 3 Tuesday Nov 26 7:30-9:30 pm Conflict Exam 3 Wednesday Nov 27 8-10 am, 10-12 noon Nov 27 Drop Date Rotor Moment of Inertia2 Conservation of Angular Momentum • Assumption: all internal torques cancel in pairs • Rotational dynamics • No external torques • Change in Angular momentum is zero • Angular Momentum is conserved sysextSSSddt=Lτ ΔLSsys≡LS , fsys−LS ,isys=0sysextSSSddt= =L0τ LS , fsys=LS ,isys3 Angular Impulse and Change in Angular Momentum • Angular impulse • Change in angular momentum • Rotational dynamics ΔLSsys≡LS , fsys−LS ,isys τSSextdttitf∫=LS , fsys−LS ,isysext sysave int( )SS St= Δ = ΔJ L τextfitSStdt=∫JτExperiment 3/4: Moment of Inertia and Conservation of Angular


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MIT 8 01 - Rotational Dynamics Angular Momentum

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