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

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Welcome to Phys 325

Announcements will be posted here as necessary.

This is the main website for the UIUC Physics course PHYS 325. It is the first of a 2-semester course on Classical Mechanics. The course description provides further information on the course and gives important details on our policies. Please consult the schedule to help you keep track of what is due when. Your grades will be updated in the online gradebook, please check this regularly to ensure your scores are begin recorded accurately.


Our Physics Student Advisory Board, with the department, are organizing a Town Hall on careers paths in industry on Wednesday, 17 April 2024, at 17:30pm in 204 Loomis. Here is their message:
The Physics department is looking to better understand the needs of physics majors going into industry, and needs your help! The Physics Student Advisory Board has organized a departmental Industry Town Hall to foster dialogue between current undergraduates, faculty, and alumni to determine what the department can do to better support students who may not be interested in graduate study. We'll be meeting on Wednesday, April 17 from 5:30-7:30 PM in Loomis 204, and we'll be providing snacks and free Kingfisher logo T-shirts. We'd love to see you there! If you can't make it in-person, we've also got a Zoom room to attend. PhySAB

The second midterm exam will take place on Thursday, 4 April 2024, during class from 13:00- 14:20 Central US in 151 Loomis. It will cover topics from lecture 11 - lecture 20 (inclusive). You can find details and a practice exam here.

The results of the first midterm exam are now available. Congratulations for completing your exam!
If you are seeking tutoring opportunities (either giving or receiving help), please check out the information that the Physics Students Advisory Board (PhySAB) kindly shared with me.

There will be no classes from 9-17 March 2024 (Spring Break).

Homework 6 submission extended! The new deadline for homework 6 is 9 March 2024 at 23:55pm Central US.

Homework 5 submission extended! The new deadline for homework 5 is 2 March 2024 at 23:55pm Central US.

The first midterm exam will take place on Thursday, 22 February 2024, during class from 13:00- 14:20 Central US in 151 Loomis. It will cover topics from lecture 1 - lecture 10 (inclusive). You can find details and a practice exam here.

Homework 4 submission extended! The new deadline for homework 4 is 17 February 2024 at 23:55pm Central US.

The first discussion sessions will take place in week 2, on 22 January 2024..
Office hours will start in week 2.

The first homework set will become available in week 1, on 18 January 2024, and is due in week 2, on 25 January 2024.

The first lecture for Phys 325 will be on Tuesday, 16 January 2024, from 13:00 - 14:20 CST in 151 Loomis.

Time and location

The course will take place in person unless instructed otherwise.
Lectures will take place on Tuesdays and Thursdays from 13:00 - 14:20 Central US in 151 Loomis.
Discussions will take place on Mondays, starting in week 2, as listed in the section information. Make sure you attend your assigned section. For section changes, please contact the Physics Undergraduate Office.
Office hours will take place on Tuesdays and Wednesdays starting in week 2.

Lecture attendance

We will take lecture attendance via gradescope. The entry code is RK3W2X.


Homework sets will become available online on Thursdays after class, starting in week 1. Homework sets are due on the following Thursday at 11:55pm Central US. The first homework set will be available on 18 January 2024 and is due on 25 January 2024.
Your homework solutions have to be submitted online via gradescope. The entry code for the homework is 2PJV8Y.
In general, you are allowed to use python or computer algebra software, like Maple or Mathematica, unless stated otherwise. If you do use computer algebra software, you must provide a well-formatted print of your code and attach it as part of your PDF solution.


There will be two midterm exams worth 15% each and one final exam worth 20% of your grade. You will find details here.


We will mainly use the textbook "Classical Mechanics" by John R. Taylor. This and additional references for further reading are listed under Textbooks and extra material.

Excused Absences

Please submit your excused absence no later than 10 working days from your absence via the Excused Absences application. The count begins the day of your absence.

Disability access (DRES)

The Department of Physics is committed to being an open and welcoming environment for all of our students. We are committed to helping all of our students to succeed in our courses.

To obtain disability-related academic adjustments and/or auxiliary aids, students must contact the Disability Resources and Educational Services (DRES) and the course instructor as soon as possible. To contact DRES, you may visit 1207 S. Oak St., Champaign, call 333-4603, e-mail or go to the DRES website.
If you are concerned you have a disability-related condition that is impacting your academic progress, there are academic screening appointments available on campus that can help diagnosis a previously undiagnosed disability by visiting the DRES website and selecting "Sign-Up for an Academic Screening" at the bottom of the page.

Assistance for Academically Related and Personal Problems

Most college offices and academic deans provide academic skills support and assistance for academically related and personal problems. Links to the appropriate contact can be found on this website.

Counseling Center 206 Fred H. Turner Student Services Building
Monday - Friday, 7:50 a.m.-5:00 p.m.
Phone: 333-3704
McKinley Mental Health 313 McKinley Health Center
Monday - Friday, 8:00 a.m.-5:00 p.m.
Phone: 333-2705

McKinley Health Education offers individual consultations for students interested in learning relaxation and other stress/time management skills, call 333-2714.

Academic integrity

All activities in this course are subject to the Academic Integrity rules as described in Article 1, Part 4, Academic Integrity, of the Student Code.