Physics114A_L20 - Physics 114A - Mechanics Lecture 20...

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Physics 114A - Mechanics Lecture 20 (Walker: Ch. 9.1-3) February 14, 2011 John G. Cramer Professor Emeritus, Department of Physics B451 PAB [email protected]
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February 14, 2011 Physics 114 - Lecture 20 2/23 Announcements HW#6 is due at 11:59 PM on Thursday, February 17.   I may be able to return Exam 2 tomorrow.  Section scores will appear on  WebAssign under “Exam2_114A Questions” as they become available. My office hours are 12:30-1:20 PM on Tuesdays and Thursdays, both in  the “114” area of the Physics Study Center on the Mezzanine floor of  PAB A (this building). Physics 114A now has a UW GoPost discussion board at:  https://catalysttools.washington.edu/gopost/board/jcramer/20670/  
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Physics 114A - Introduction to Mechanics Lecture: Professor John G. Cramer Textbook: Physics, Vol. 1 (UW Edition), James S. Walker Week Date L# Lecture Topic Pages Slides Reading HW Due Lab 7 14-Feb-11 20 8 23 9-1 to 9-3 15-Feb-11 21 Momentum Conservation 11 24 9-4 to 9-5 17-Feb-11 22 10 22 9-6 to 9-7 HW6 18-Feb-11 23 Rotational Kinematics 13 30 10-1 to 10-3 8 21-Feb-11 H2 President's Day Holiday Angular Kinematics Torque 22-Feb-11 24 Rotational Inertia 5 24 10-4 to 10-5 24-Feb-11 25 Energy Conservation II 5 25 10-6 HW7 25-Feb-11 26 18 26 11-1 to 11-4 9 28-Feb-11 27 Angular Momentum 10 25 11-5 to 11-7 Rotational Motion, Mom.of Inertia 1-Mar-11 28 Rotational Dynamics 3 26 11-8 to 11-9 3-Mar-11 R3 Review & Extension - 49 - HW8 4-Mar-11 E3 EXAM 3 - Chapters 9-11 10 7-Mar-11 29 Gravity Revisited 16 29 12-1 to 12-3 Make-up labs 8-Mar-11 30 Gravitational Energy 10 29 12-4 to 12-5 10-Mar-11 31 Oscillations I 14 30 13-1 to 13-4 11-Mar-11 32 Oscillations II 12 32 13-5 to 13-8 HW9 14-Mar-11 FE Final Examination, 2:30 - 4:20 PM, Monday, March 14 (Comprehensive) February 14, 2011 Physics 114 - Lecture 20 3/23 Lecture Schedule (Part 3) We are here.
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February 14, 2011 Physics 114 - Lecture 20 4/23 Linear Momentum      Momentum is a vector; its direction is the same as the  direction of the velocity.
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February 14, 2011 Physics 114 - Lecture 20 5/23 Change in Momentum Change in momentum:   p = p after  - p before Teddy Bear:     p = 0-(-mv) = mv  Bouncing Ball:  p = mv-(-mv) = 2mv
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February 14, 2011 Physics 114 - Lecture 20 6/23 Newton’s Second Law Newton’s second law, as we wrote it before, is: is only valid for objects that have  constant mass .       Here is a more general form in terms of momentum, which is also useful when 
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This note was uploaded on 01/20/2012 for the course PHYSICS 114A taught by Professor Johncramer during the Winter '12 term at University of Washington.

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Physics114A_L20 - Physics 114A - Mechanics Lecture 20...

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