PHYS 325 :: Physics Illinois :: University of Illinois at Urbana-Champaign

Course Description

General overview

Physics 325 is the first half of the complete classical mechanics sequence (Physics 326 is the second half).  Physics 325 will probably require more work than your previous physics courses and is a serious departure from "the plug-n-chug from the formula sheet" mode of operation to which you may have become accustomed.  You will be deriving analytic expressions, and learning to critique and interpret and apply them.   I expect you to know first year calculus thoroughly and be prepared to go beyond that level.  Topics such as matrices, vector mathematics, multivariable calculus, and differential equations covered in PHYS 225 will be assumed.  Concurrent registration or completion of Math 285 or equivalent is also expected.   If you plan on taking Physics 326, I strongly encourage you to take a linear algebra class (e.g. Math 415) this semester.  Here are links to a couple of collections of math and physics formulas that you may find useful during this and other Physics courses, some of which you may recognize.

Texts

    * Approximate Lecture Notes ALN – notes from a previous year.  Required.  Available in the Illini Union bookstore.   It is highly recommended that you purchase, and read and annotate, these notes as you prepare for each lecture.   If it seems to be sold-out, place a hold for a new copy by following these instructions.
    * .pdf lecture notes of actual lectures, with mini-quiz solutions,  To be posted online after each class
    * Taylor, Classical Mechanics  (recommended)
    * Thornton & Marion, Classical Dynamics of Particles and Systems. The Fifth Edition is best, but earlier editions are also fine. (recommended)
    * No HWs will be assigned from the texts.

I've put copies of Taylor, and of Thornton & Marion (also the 4th edition of Marion), on reserve for PHYS 325 in Grainger Library.

Both Taylor and Thornton&Marion are a bit pricey.     Though I've seen Thornton&Marion in paperback for $25 at Amazon.

 

Lectures/Quizzes

Most lectures will conclude with a "mini-quiz" on the material of that lecture.   They will be graded (1% of your grade) only for attendance, so feel free to consult with your neighbors.

Official lecture notes will be posted at the course website after each class. 

Please review the section information for lecture and discussion times this semester.

 

Discussion problem sessions

When registering for this course, you registered for a problem session, which will take place weekly. Because space is limited, please be sure to go to the section for which you are registered. Attendance at these problem sessions is mandatory, and participation is worth 5% of your grade. You must show up on time to receive full credit. We'll take 15% off the credit for each 5 minutes of being late. If you are late by more than 30 minutes you will not receive credit. After class you will be able to access the problem session materials through the course schedule page.

The last date on which one can easily change sections is Jan 28.

Please review the section information for problem sessions scheduled this semester.

Homework

Homework is an essential part of this course and accounts for about 34% of your grade. The homework will usually be assigned (and made available online) at the end of each Thursday lecture and will usually cover the lecture material of that day and the following Tuesday.  Most weeks I will collect your solutions at the beginning of the Thursday lecture one week later. HW is broken into parts A(pink) and B(green). Please hand in each part  A & B separately, as each part will be graded by a different grader.   Please staple the corresponding assignment cover page (pink or green if you use the hard-copies I hand out) to your solution.   Make sure your name is on your cover sheets.    Name or initials on each subsequent page would be good too.   You may also place your completed homework in the yellow PHYS 325 box located at the the second floor "Interpass" in Loomis, but it must be in the box by 1:00 pm on the day that it is due to receive full credit. Late work will be marked down by 15% each day that it is late and will not be graded if it is more than one week late. If you do hand in your HW late, email the graders to tell them when you did so, otherwise it will be assumed to have been deposited just before the grader checked the box.   Solutions will be posted one week after HWs are due.

I don't object to people consulting wiht each other on the homework problems together as long as the work that you hand in for grading is your own. Specifically, do not hand in work that is obviously copied. All work must be your own, with your own reasoning and working. Partial credit will be awarded on homework and exams, so please write out your problems neatly showing all steps and writing IN WORDS what you are doing and your reasoning. This will allow the graders to assign partial credit, and point out where you have made errors. I strongly recommend that you thoroughly struggle with the problems yourself first before you seek out help. You'll learn more this way and you'll do better on the exams when you're on your own. Trust me on this one.

You are free to use computer software such as Mathematica, Maple or Matlab to complete your homework problems. However, do not turn in output from these programs, unless a problem specifically asks for it (i.e. plots or code). You will not have this capability on the exams, so I suggest that you use these resources wisely and do not rely on them to do simple algebra, or solve simple differential equations.

You will be able to access the homework assignments through the course schedule page in case you do not get it in the lecture.

Exams

There will be two (probably in-class) midterm exams worth about 15% each, and one final exam (7-10pm Friday May 3) worth about 30%. For all exams, no calculators or computers will be allowed.   I suspect that one page of personal notes will be allowed at each exam, but that is not yet confirmed. Formula sheets will be provided.   They will be posted, along with a sample exam, in advance of each exam.

Midterm Exam dates are not yet firm, and will be announced. Please check the course schedule for full details.

Academic integrity

The giving or receiving  of unauthorized assistance from another person, or the use of unauthorized materials during University Examinations can be grounds for disciplinary action, up to and including expulsion from the University. Course grading will proceed in compliance with University policy as given in Article 3, Part 1 of the Student Code.

Please be aware that prior to or during an examination the instructional staff may wish to rearrange the student seating. Such action does not mean that anyone is suspected of inappropriate behavior.

Searching the internet for material relating to solutions to problems you are working is prohibited. You are on your honor to hold to this. I will only permit information you can find in textbooks and reference works such as calculus texts or tables of integrals and special functions. Plagiarism and cheating will not be tolerated and will be grounds for disciplinary action.