Physics131_L23WI10

Physics131_L23WI10 - Physics 131 Mechanics Lecture 23...

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Physics 131 - Mechanics Lecture 23 Chapter 12 March 8 , 2010 Homeyra Sadaghiani [email protected]

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9 1-Mar 19 Work, force, potential energy 11.4-6 (12 P)   3-Mar 20 Conservation of energy, power 11.7-9 (9 P) HW#8   5-Mar 21 Rotational motion, center of mass 12.1-3 (8 P) 10 8-Mar 22 Moment of inertia, Torque, static equilibrium 12.4-8 (7 P)   10-Mar 23 Rotational dynamics, final assessment HW#9   12-Mar R Review   19-Mar FINAL EXAM 11:30 A.M.-1:30 P.M. 3-2137 - Comprehensive Schedule 131.03 11:00-12:00 We are here! 2 March 10, 2010 Physics 131 - Lecture 23
9 1-Mar 19 Work, force, potential energy 11.4-6 (12 P)   3-Mar 20 Conservation of energy, power 11.7-9 (9 P) HW#8   5-Mar 21 Rotational motion, center of mass 12.1-3 (8 P) 10 8-Mar 22 Moment of inertia, Torque, static equilibrium 12.4-8 (7 P)   10-Mar 23 Rotational dynamics, final assessment 12.5-11 HW#9   12-Mar R Review   17-Mar FINAL EXAM 11:30 A.M.-1:30 P.M. 3-2137 - Comprehensive Schedule 131.04 12:00-1:00 We are here! March 10, 2010 3 Physics 131 - Lecture 23

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On Friday, Feb 26th, wewill haveExam 1, which covers Knight, Chapters 5-10 and my lectures 10-18. Exam 2 is closed-book, but you may bring with you one pageof notes on a 8½x11” sheet of paper with your nameon it and should turn it in with your exam. Bring a Scantron sheet and a calculator with good batteries. Exam will be mostly multiple-choice based on lecture exampleproblems, clickers, preflights, and end-of-chapter homework problems in Knight. Final Exam
Announcements March 10, 2010 Physics 131 - Lecture 23 5 All the class lectures are posted on Bb Final Exam covers Knight, Chapters 1-12 and my lectures 1-23 Exam is closed-book, but you may bring with you onepage of notes on a 8½x11” sheet of paper with your nameon it and should turn it in with your exam. Bring a Scantron sheet and a calculator with good batteries. Exam 2 will have a multiple-choicesection and a free-response section based on lectureexample problems and end-of-chapter homework problems in Knight.

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Torque Consider the common experience of pushing open a door. Shown is a top view of a door hinged on the left. Four pushing forces are shown, all of equal strength. Which of these will be most effective at opening the door?
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