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Unformatted text preview: Physics 16 Assignment #2 During the week of September 28  October 5, reread section 4.4 (I should have told you not to read this last week — sorry about that), and read sections 5.15.3 and 5.58 of David Morin’s book. We will come back to section 5.4 later in the term. Section 5.3 may be hard for some of you because it involves some serious multivariable calculus. Don’t worry too much about this and don’t spend too much time on it. You will see in problems that we won’t need to do anything really hard. I recommend that you treat section 5.3 primarily as a reference for when you see some calculus that you find confusing. Note that there are two places in this problem set where you are asked to draw graphs using Mathematica or some similar system. Make sure that you get started early enough to do this. As usual, you can work on this in groups, but you should each submit a printout of your graphs and you should include on the printout a list of all the people who worked on it. Your teaching staff members are available for Mathematica help if you need it. Q&A questions to be answered on the Physics 16 web site before 11pm on Monday, Octo ber 3, 2005: 2QA1 . What is the best answer to exercise 3 in section 5.9 of Morin’s book: Heading to infinity * — A particle moves away from the origin under the influence of a potential V ( x ) = A  x  n . For what values of n will it reach infinity in a finite time? [note: Assume A > .] A n > 1 B n ≥ 1 C n > 2 D n ≥ 2 E None of the above In addition, there are some survey questions and feedback questions. Due at the beginning of lecture on Thursday, October 6, 2005: Do the problems below. Make sure that you define all the relevant variables and follow the rules of coherence. 21 . A damped harmonic oscillator has a mass m and Γ = 14 /τ and K = 625 m/τ 2 (21.1) where τ is a constant with dimensions of time. Suppose that the mass is sitting at rest at the origin at t = 0 when an external force of the form F ( t ) = F cos 25 t τ (21.2) is turned on.is turned on....
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This note was uploaded on 05/09/2009 for the course NATURAL SC Physics taught by Professor Johnrobertson during the Spring '09 term at German University in Cairo.
 Spring '09
 JohnRobertson

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