Difference between revisions of "Engineering Analysis 3"

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'''EA3 System Dynamics, Spring Quarter 2024'''
'''EA3 System Dynamics, Spring Quarter 2026'''


This wiki page: [https://tinyurl.com/ea3nu tinyurl.com/ea3nu]
This wiki page: [https://tinyurl.com/ea3nu tinyurl.com/ea3nu], or just google "NU EA3" or "Northwestern EA3" and it will come up near the top.


==Instructors, TAs, and Sections==
==Instructors, TAs, and Sections==


Each section covers the same material, at approximately the same pace, following the same readings from the web textbook (below), though each instructor's lecture notes and teaching style may be different. All sections have the same homeworks, due the same time and day. The quizzes in each section will be different.
Each section covers the same material, at approximately the same pace, following the same readings from the web textbook (below), though each instructor's lecture notes and teaching style may be different. All sections have the same homeworks, due the same time and day. The quizzes in each section will be different. You may go to a discussion section you are not registered for if there is room in the room.


* Section 20: Lecture 10-10:50 MWF Annenberg G15; TA-led discussion Tuesday, Frances Searle 1441
* Section 20: Lecture 10-10:50 MWF
** Instructor: Prof. Kevin Lynch, kmlynch@northwestern.edu
** Instructor: Prof. Kevin Lynch, kmlynch@northwestern.edu
** TAs:
** TAs: Megan Black, MeganBlack2027@u.northwestern.edu, and Chyim Bowen, ChyimBowen2026@u.northwestern.edu (also Ayesha Ahmed, ayesha.ahmed1@northwestern.edu)
* Section 21: Lecture 11-11:50 MWF Pancoe Auditorium; TA-led discussion Tuesday, Pancoe Auditorium
* Section 21: Lecture 11-11:50 MWF
⚫
** Instructor: Prof. Manohar Kulkarni, manohar.kulkarni@northwestern.edu
** TAs:
* Section 22: Lecture 1-1:50 MWF
** Instructor: Prof. Jeremy Keys, jeremy.keys@northwestern.edu
** Instructor: Prof. Jeremy Keys, jeremy.keys@northwestern.edu
** TAs:
** TAs: Xiaoyu Xie, XiaoyuXie2020@u.northwestern.edu, and Gaurav Tyagi, gaurav.tyagi@northwestern.edu
* Section 22: Lecture 1-1:50 MWF, Pancoe Auditorium; TA-led discussion Tuesday, Tech M345
* Section 23: Lecture 2-2:50 MWF
** Instructor: Prof. Jeremy Keys, jeremy.keys@northwestern.edu
** Instructor: Prof. Cheng Sun, c-sun@northwestern.edu
** TAs:
** TAs: Ruoming Gong, RuomingGong2027@u.northwestern.edu, and Plenyo Gonzaga Araujo, PlenyoGonzagaAraujo2025@u.northwestern.edu
* Section 23: Lecture 2-2:50 MWF, Tech M345; TA-led discussion Tuesday, Pancoe Auditorium
⚫
** Instructor: Prof. Manohar Kulkarni, manohar.kulkarni@northwestern.edu
** TAs: Nandeesh Bhatia, NandeeshBhatia2024@u.northwestern.edu, and Tapiwanashe Bhibho, TapiwanasheBhibho2027@u.northwestern.edu


'''Instructors'''

[[image:EA3-instructors-s2024.jpg|500px]]


⚫
<!--
'''TAs'''
'''TAs'''


[[image:EA3-TAs-s2024.jpg|700px]]
[[image:EA3-TAs-s2025.jpg|500px]]


==Office Hours==
==Office Hours==


{| class=wikitable
{| class=wikitable
|+ Office hour schedule, beginning April 1. All office hours in Tech AG21 unless otherwise noted.
|+ Office hour schedule, beginning Wed April 2. All office hours in Tech AG21 unless otherwise noted.
!
!
! 9-10 am
! 9-10 am
Line 44: Line 40:
! 5-6 pm
! 5-6 pm
|-
|-
! Mon (none Memorial Day)
! Mon
| x || x || x || x || x || x || || ||
| x || x || x || x || x || x || Akpan || Akpan || Hu
|-
|-
! Tues
! Tues
| || || || || || || || ||
| Yu || Yu || Ahmed || Ahmed || Zhao || Ahmed || Ahmed || Liu || Liu
|-
|-
! Wed
! Wed
| || || || || || || || ||
| Keys || Yu || Lynch || Banerjee || Sun || Banerjee || Kulkarni, Tech B290 || Banerjee || Banerjee
|-
|-
! Thurs
! Thurs
| || || || || || || || ||
| Yu || Liu || Liu || Zhao || Zhao || Zhao || x || x || x
|-
|-
! Fri
! Fri
| || || || || || || || ||
| x || x || Akpan || Akpan || Hu || Hu || Hu || ||
|}
|}

Office hours are subject to change. Please check the schedule before going to office hours to get the latest information. Office hours are not offered in time slots that are blank or marked with an x.


==Course Summary==
==Course Summary==
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'''Prerequisite:''' a C- or better in EA2.
'''Prerequisite:''' a C- or better in EA2.
⚫
<!--
Contribution to
* mathematics and basic sciences: 80%
* engineering topics: 20%
* general education: 0%
-->


==Course Policies==
==Course Policies==

Please see [https://www.registrar.northwestern.edu/registration-graduation/northwestern-university-syllabus-standards.html Northwestern's syllabus standards] and below for summaries and additions.


'''Supportive Class Environment'''
'''Supportive Class Environment'''
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'''Honor Code'''
'''Honor Code'''


You are encouraged to discuss the material with the instructor, course assistants, and your classmates, but you are not allowed to copy answers or code from others in the class or any other sources, nor are you allowed to share your answers or code with others. ''Anyone copying answers or code, or providing answers or code, or becoming aware of others doing so without reporting to the instructor, is in violation of the honor code.''
You are encouraged to discuss the material with the instructor, course assistants, and your classmates, but you are not allowed to copy answers or code from others in the class or other sources, nor are you allowed to share your answers or code with others. If you use generative AI to help you with your work, you are obligated to cite the source and nature of the help; for example, if you turn in code generated in whole or in part by generative AI, you must cite the AI software in the comments, and you are required to understand how and why the code works. (Note also that electronics are not available during tests, so submitting code you do not understand will not help you prepare for tests.) ''Anyone copying answers or code, or providing answers or code, or becoming aware of others doing so without reporting to the instructor, is in violation of the honor code.''


'''Academic Support and Learning Advancement (ASLA)'''
'''Academic Support and Learning Advancement (ASLA)'''


Northwestern's [https://www.northwestern.edu/academic-support-learning/ Academic Support and Learning Advancement office] offers [https://www.northwestern.edu/academic-support-learning/course-support/peer-guided-study-groups.html peer-guided study groups], [https://www.northwestern.edu/academic-support-learning/course-support/drop-in-peer-tutoring.html drop-in peer tutoring], [https://www.northwestern.edu/academic-support-learning/academic-coaching-and-mentoring/index.html individual and group peer academic coaching], and [https://www.northwestern.edu/academic-support-learning/academic-coaching-and-mentoring/make-an-appointment.html consultations] to help students navigate their academic paths and refine their study strategies.
Northwestern's [https://www.northwestern.edu/academic-support-learning/ Academic Support and Learning Advancement office] offers [https://www.northwestern.edu/academic-support-learning/course-support/peer-guided-study-groups/ peer-guided study groups], [https://www.northwestern.edu/academic-support-learning/course-support/drop-in-peer-tutoring.html drop-in peer tutoring], [https://www.northwestern.edu/academic-support-learning/academic-coaching-and-mentoring/index.html individual and group peer academic coaching], and [https://www.northwestern.edu/academic-support-learning/academic-coaching-and-mentoring/make-an-appointment.html consultations] to help students navigate their academic paths and refine their study strategies.


'''Accessible NU'''
'''Accessible NU'''


If you need accommodation in this course because of a disability, contact [http://www.northwestern.edu/accessiblenu/ Accessible NU] immediately.
If you need accommodation in this course because of a disability, contact [http://www.northwestern.edu/accessiblenu/ Accessible NU] immediately.

'''Religious Holidays'''

Provost's [https://www.northwestern.edu/provost/policies-procedures/classwork-curricular-policies/accommodations-for-religious-holidays.html statement] on accommodations for
[https://www.northwestern.edu/religious-life/explore-our-programs/religious-observance.html religious holidays].


==Course Schedule and Quizzes==
==Course Schedule and Quizzes==


Lectures MWF by the instructors. Tuesday discussion sections led by the TAs, primarily focused on solving problems. First day of class is '''Tuesday March 26''', but following a Monday schedule. We begin the normal rhythm Wednesday March 27. Office hours begin Monday April 1, and the first homework is due Thursday April 4.
Lectures MWF by the instructors. Tuesday discussion sessions led by the TAs, primarily focused on solving problems. First day of class is '''Tuesday April 1''', but following a Monday schedule. We begin the normal rhythm Wednesday April 3. The first homework is due Thursday April 11.

Lectures will be recorded and available on Canvas via Panopto if you miss a class.


There will be three in-class 50-minute quizzes, on
There will be three in-class 50-minute quizzes, on
* Monday April 22
* Monday April 28
* Monday May 13
* Monday May 19
* Friday May 31 (last day of class)
* Friday June 6 (last day of class)
Students must attend the quiz in their own section, and the quizzes in each section will be different. There is no final exam. No electronic devices (phones, tablets, laptops, watches, etc.) are allowed during quizzes. No notes or scratch paper.
Students must attend the quiz in their own section, and the quizzes in each section will be different. There is no final exam. No electronic devices (phones, tablets, laptops, watches, etc.) are allowed during quizzes. No notes or scratch paper.


Quizzes focus mostly on recent material (e.g., material not covered on previous quizzes), but they may require anything from the course up until the most recent homework.
Quizzes focus mostly on recent material (e.g., material not covered on previous quizzes), but they may require anything from the course up until the most recent homework.

Here are '''[[Media:EA3-past-quizzes-2025-updated.zip|past quizzes]]''' with answers, for practice.


Partial credit may be awarded, so make sure your thought process is clear in your answer. If you just write an answer, and it is wrong, you will get no credit. If you just write an answer, and it is correct but it is not obvious to us where the answer came from, you may not get credit. We strive for consistency in awarding partial credit, so requests for more partial credit will not be considered. The only way to ensure full credit is to get the answer correct and to be clear about how you arrived at it.
Partial credit may be awarded, so make sure your thought process is clear in your answer. If you just write an answer, and it is wrong, you will get no credit. If you just write an answer, and it is correct but it is not obvious to us where the answer came from, you may not get credit. We strive for consistency in awarding partial credit, so requests for more partial credit will not be considered. The only way to ensure full credit is to get the answer correct and to be clear about how you arrived at it.
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'''If you think there was an error grading your quiz, you may request a regrade by typing a clear explanation and turning it in, along with the quiz itself, to an instructor at the next class after the quiz was returned to you.''' If a regrade is requested, your score may go up or down on any question on the quiz. No marks, erasures, or alterations to the quiz, of any kind, are allowed. Regrades may only be requested if there was an error in grading; requests for more partial credit will not be accepted.
'''If you think there was an error grading your quiz, you may request a regrade by typing a clear explanation and turning it in, along with the quiz itself, to an instructor at the next class after the quiz was returned to you.''' If a regrade is requested, your score may go up or down on any question on the quiz. No marks, erasures, or alterations to the quiz, of any kind, are allowed. Regrades may only be requested if there was an error in grading; requests for more partial credit will not be accepted.


If you are registered with Accessible NU for a testing accommodation, make sure to let your instructor know, and report to the following rooms 30 minutes before your normal class time on days of quizzes:
If you are registered with Accessible NU for a testing accommodation, make sure to let your instructor know, and report to the following room 30 minutes before your normal class time on days of quizzes. This will be a low-distraction environment.
* Monday April 22: Tech L440
* Monday April 28: Tech C211
* Monday May 13: Tech L440
* Monday May 19: Tech C211
* Friday May 31: Tech L440
* Friday June 6: Tech C211

⚫
Because of the large size of the course, '''make-up quizzes are not offered'''. If you need an accommodation for an emergency, you will be directed to the undergraduate engineering office to make the request. If you have a scheduled, unavoidable, legitimate conflict, it is your responsibility to report it to your instructor '''at the beginning of the quarter'''.


==Homework==
==Homework==


Homeworks are due each Thursday (except the first and last week) at 5 PM, and homework solutions will be released Thursday nights. Homeworks must be submitted electronically through Canvas. Late assignments will not be accepted. No exceptions, so please don't ask. Your lowest homework grade will be dropped from the calculation of your homework score.
Homeworks are due each Thursday (except the first and last week) at 5 PM, and homework solutions will be released Thursday nights. Homeworks must be submitted electronically through Canvas. Late submissions will not be accepted. '''No exceptions, so please don't ask.''' Your lowest homework grade will be dropped from the calculation of your homework score to accommodate an emergency, celebration of a religious holiday, homeworks that are just a few minutes late, homeworks that you completed on time but forgot to submit, or any other circumstance.


Homework must be submitted in a single pdf file, titled LastnameFirstname.pdf (substitute in your own last name [family name] and first name [given name]). All work must be clear and legible or you will not receive full credit. Make sure to show your thought process in case multiple steps are involved; don't just give an answer. Some homeworks involve Matlab programming. You should comment your code so it is easy to understand.
Homework must be submitted in a single pdf file, titled LastnameFirstname.pdf (substitute in your own last name [family name] and first name [given name]). All work must be clear and legible or you will not receive full credit. Make sure to show your thought process in case multiple steps are involved; don't just give an answer. Some homeworks involve Matlab programming. You should comment your code so it is easy to understand. When including code in the pdf, make sure to print the code as pdf (don't take images of code, for example) so the code is copy-and-pastable.


==Grading==
==Grading==


The three quizzes count for 75% of your class grade. Homeworks account for the remaining 25%. Test scores and final grades are assigned in each section independently of the other sections. So if your homework and test score average in section A is 75% and your friend's in section B is 85%, your friend's final grade will not necessarily be higher than yours.
The three quizzes count for 75% of your class grade. Homeworks account for the remaining 25%. Test scores and final grades are assigned in each section independently of the other sections. So if your homework and test score average in section A is 75% and your friend's in section B is 85%, your friend's final grade will not necessarily be higher than yours.

⚫
Because of the large size of the course, '''make-up quizzes are not offered'''. If you need an accommodation for an emergency or other reason, you will be directed to the undergraduate engineering office to make the request.


==Syllabus and Web Textbook==
==Syllabus and Web Textbook==
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'''Week 5'''
'''Week 5'''


''Monday Quiz''
# <li value="9">[http://othello.mech.northwestern.edu/ea3/book/mech5/Mech5.htm '''Force and velocity sources''']
# <li value="9">[http://othello.mech.northwestern.edu/ea3/book/mech5/Mech5.htm '''Force and velocity sources''']
## [http://othello.mech.northwestern.edu/ea3/book/mech5/Sources.htm Practice with force and velocity sources]</li>
## [http://othello.mech.northwestern.edu/ea3/book/mech5/Sources.htm Practice with force and velocity sources]</li>
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===Electrical Systems===
===Electrical Systems===


'''[[Simulating circuits]]''' in LTspice
⚫
# [https://othello.mech.northwestern.edu/ea3/book/elec1_2007/Volt.htm '''Introduction''']: voltage and current, charge and current, voltage and potential, power source: batteries
# [https://othello.mech.northwestern.edu/ea3/book/elec2_2007/Resistors.htm '''Resistors''']: constitutive law (Ohm's law), meter polarities, power, Kirchoff's laws
# [https://othello.mech.northwestern.edu/ea3/book/elec1_2007/Volt.htm '''Introduction''']: charge, current, voltage, batteries
⚫
# [https://othello.mech.northwestern.edu/ea3/book/elec2_2007/Resistors.htm '''Resistors''']: constitutive law (Ohm's law), meter polarities, power, Kirchhoff's laws
## [https://othello.mech.northwestern.edu/ea3/book/elec2_2007/Example1.htm Examples]
## [https://othello.mech.northwestern.edu/ea3/book/elec2_2007/Example1.htm Examples]
# [https://othello.mech.northwestern.edu/ea3/book/elec4/Capacitors.htm '''Capacitors''']: charge, capacitance, and energy
# [https://othello.mech.northwestern.edu/ea3/book/elec4/Capacitors.htm '''Capacitors''']: charge, capacitance, and energy
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'''Week 8'''
'''Week 8'''


''Monday Quiz''
# <li value="4">[https://othello.mech.northwestern.edu/ea3/book/elec6/Circuit.htm'''Formulating equations for circuits''']: circuit diagram notation, Kirchoff's laws, step 1 equations, step 2 state variables and equations</li>
## Kirchoff's laws [https://othello.mech.northwestern.edu/ea3/book/elec6/Example1.htm example 1], [https://othello.mech.northwestern.edu/ea3/book/elec6/Example2.htm example 2]
# <li value="4">[https://othello.mech.northwestern.edu/ea3/book/elec6/Circuit.htm'''Formulating equations for circuits''']: circuit diagram notation, Kirchhoff's laws, step 1 equations, step 2 state variables and equations</li>
## Kirchhoff's laws [https://othello.mech.northwestern.edu/ea3/book/elec6/Example1.htm example 1], [https://othello.mech.northwestern.edu/ea3/book/elec6/Example2.htm example 2]
## [https://othello.mech.northwestern.edu/ea3/book/elec6/Example3.htm Example]: state variables and equations
## [https://othello.mech.northwestern.edu/ea3/book/elec6/Example3.htm Example]: state variables and equations
# [https://othello.mech.northwestern.edu/ea3/book/elec5/RC.htm '''Simple RC circuits''']: RC time constant, charging up a capacitor (applet broken)
# [https://othello.mech.northwestern.edu/ea3/book/elec5/RC.htm '''Simple RC circuits''']: RC time constant, charging up a capacitor (applet broken)
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'''Week 10'''
'''Week 10'''


Review and final quiz
Review and ''Friday Quiz''


===Reference===
===Reference===
* [https://othello.mech.northwestern.edu/ea3/book/summary/formulas.html '''Important concepts and formulas''']
* [https://othello.mech.northwestern.edu/ea3/book/summary/formulas.html '''Important concepts and formulas''']
* [https://othello.mech.northwestern.edu/ea3/book/summary/scientists.html '''Famous scientists''']
* [https://othello.mech.northwestern.edu/ea3/book/summary/scientists.html '''Famous scientists (in EA3)''']


<!--
* '''Mode analysis'''
** Example 1
** Example 2
** Example 3
-->
-->

'''CLICK HERE FOR [[Engineering Analysis 3 (Archive 2025)]]'''

Latest revision as of 12:17, 5 January 2026

EA3 System Dynamics, Spring Quarter 2026

This wiki page: tinyurl.com/ea3nu, or just google "NU EA3" or "Northwestern EA3" and it will come up near the top.

Instructors, TAs, and Sections

Each section covers the same material, at approximately the same pace, following the same readings from the web textbook (below), though each instructor's lecture notes and teaching style may be different. All sections have the same homeworks, due the same time and day. The quizzes in each section will be different. You may go to a discussion section you are not registered for if there is room in the room.

  • Section 20: Lecture 10-10:50 MWF
    • Instructor: Prof. Kevin Lynch, kmlynch@northwestern.edu
    • TAs:
  • Section 21: Lecture 11-11:50 MWF
    • Instructor: Prof. Manohar Kulkarni, manohar.kulkarni@northwestern.edu
    • TAs:
  • Section 22: Lecture 1-1:50 MWF
    • Instructor: Prof. Jeremy Keys, jeremy.keys@northwestern.edu
    • TAs:
  • Section 23: Lecture 2-2:50 MWF
    • Instructor: Prof. Cheng Sun, c-sun@northwestern.edu
    • TAs:


CLICK HERE FOR Engineering Analysis 3 (Archive 2025)

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