Lec06 - Physics 140 Fall 2007 lecture 6 20 Sep Ch 4/5 topics Newton's laws of motion Newton's third law action-reaction pairs Notices first midterm

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Physics 140 – Fall 2007 lecture 6 : 20 Sep Notices: • first midterm exam is Thursday, 4 Oct, 6:00-7:30 pm need alternate time? Explain your situation in an e-mail to: [email protected] • practice exam posted to Ctools try unworked version first (answers on last page), then consult solutions Ch 4/5 topics: • Newton’s laws of motion • Newton’s third law: action-reaction pairs Fundamental Forces of Nature http://www.pbs.org/wgbh/nova/teachers/activities/images/3012_elegant_fonfourforces.gif binds large objects together (but makes the universe fly apart on large scales!) binds atomic nuclei together, builds elements, powers stars Life! Contact forces! Normal forces! Friction! Nuclear fission, drives supernova explosions quantum electrodynamics quantum chromodynamics quantum gravity?
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On a horizontal, frictionless surface, the blocks above are being acted upon by two opposing horizontal forces, as shown. What is the magnitude of the
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This note was uploaded on 04/03/2008 for the course PHYSICS 140 taught by Professor Evrard during the Fall '07 term at University of Michigan.

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Lec06 - Physics 140 Fall 2007 lecture 6 20 Sep Ch 4/5 topics Newton's laws of motion Newton's third law action-reaction pairs Notices first midterm

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