Physics114A_L14 - Physics 114B - Mechanics Lecture 15...

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Physics 114B - Mechanics Lecture 15 (Walker: Ch. 6.2-4) January 31, 2011 John G. Cramer Professor Emeritus, Department of Physics B451 PAB jcramer@uw.edu
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January 31, 2011 Physics 114A - Lecture 14 2/26 Announcements HW#4 is due at 11:59 PM on Thursday, February 3. HW#5 is due at 11:59  PM on Thursday, February 10. There is now a Catalyst Go-Post message board for Physics 114A.  The URL  is: https://catalyst.uw.edu/gopost/board/jcramer/20670/ As of today 205/208 clickers are registered.  Clicker numbers and cumulative  clicker scores (20 max) as of Friday are currently posted on WebAssign.
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January 31, 2011 Physics 114A - Lecture 14 3/26 Lecture Schedule (Part 2) We are here. 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 4 24-Jan-11 10 Newton's Laws 14 29 5-1 to 5-4 1-D Dynamics 25-Jan-11 11 Common Forces 11 31 5-5 to 5-7 27-Jan-11 12 Free Body Diagrams - 24 - HW3 28-Jan-11 13 Friction 9 27 6-1 5 31-Jan-11 14 12 26 6-2 to 6-4 Newton's Laws Tension 1-Feb-11 15 Circular Motion 5 30 6-5 3-Feb-11 16 11 23 7-1 to 7-2 HW4 4-Feb-11 17 7 25 7-3 to 7-4 6 7-Feb-11 18 Potential Energy 10 26 8-1 to 8-2 Work-energy 8-Feb-11 19 Energy Conservation I 16 18 8-3 to 8-5 10-Feb-11 R2 Review & Extension - 44 - HW5 11-Feb-11 E2 EXAM 2 - Chapters 5-8
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January 31, 2011 Physics 114A - Lecture 14 4/26 Strings      When you pull on a string or rope, it becomes taut. We say that there  is  tension  in the string.
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January 31, 2011 Physics 114A - Lecture 14 5/26 Strings      The tension in a real rope will vary along its length, due to the weight  of the rope itself. Here, we will assume that all ropes,  strings, wires, etc. are massless unless  otherwise stated.
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January 31, 2011 Physics 114A - Lecture 14 6/26      A horizontal force  F  acts on a block  that is connected to another block by a  string.   Consider the constraints and the  forces. The Massless String
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Physics114A_L14 - Physics 114B - Mechanics Lecture 15...

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