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Unformatted text preview: Spring 2011 PHYS 172: Modern Mechanics Lecture 8 Exam review, Curving motion, spring-mass Read 5.2-5.7, 4.11 EXAM 1 is next week Time: 8:00-10:00 pm Wed Feb 9 Place: Elliott Hall Material: lectures 1-8, HW 1-8 (chapters 1-5 in the book, except 4.11-4.14) Problems: multiple choice, 14 questions (70 points) write-up part, hand graded (30 points) Equation sheet: provided with exam Practice exam + equation sheet: will be posted at the end of this week Note: no lecture on Feb 10 ! Equilibrium with two strings net dp F dt = & & m Static equilibrium mg & 2 F & 1 F & Know mass. Need to know the force F 2 required to achieve dp dt = & & 1 2 F F mg + + = & & & & Geometrical: mg & 2 F & 1 F & 2 tan F mg = & 2 tan ,0,0 F mg = & x y See p. 182 for details Additional examples: pp. 183-186 Clicker: Rate of change of momentum p & p & net dp F dt = & & 4 . What is at the highest point? dp dt & 2 . What is at the equilibrium point?...
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This note was uploaded on 04/23/2011 for the course PHYS 172 taught by Professor ? during the Spring '08 term at Purdue University-West Lafayette.
- Spring '08