University of
Maryland Department of Physics
PHYS
410  Classical Mechanics
Prof. Hall  Spring 2020
 Final Exam will
be optional (updated 5/13/20)

Students who submit homeworks #9, #10, and #11 will have the
option to complete the course without a final exam.
 For students that opt out of the final, the grading scale
will be: 33% for homework, 33% each for midterm exams 1 and
2. The letter grade will be calculated according to the 10
point grading scale indicated in the syllabus.
 Homeworks #9, #10, and #11 must be completed with sufficient
effort to demonstrate proficiency on this portion of the
course material. I will make a judgement about whether this
requirement has been satisfied by each student.
 Students who would like to opt out of the final exam should
inform me by email by Wednesday May 6th. I will confirm that
the student has satisfied all requirements by Monday May 11th.
 For students taking the final exam:
 The exam will cover only the material on homeworks 9, 10,
and 11 (Taylor chapters 9 and 10.) The exam will be held on
Thursday May 14th, or by special arrangement on an alternate
date.
 You will be allowed to use:
 Students taking the exam will
receive it by email on Thursday May 14th at 8 am.
 Students will be allowed three hours
to complete the exam.
 Solutions should be uploaded to ELMS
by 5 pm on Thursday May 14th.
 How to study for the exams:
 Review the homework problems.
 Review your class notes and my lecture notes.
 Review the textbook.
 Review the optional homework problems.
 Watch the exam review video, to be posted on ELMS.
 Week 15 schedule (May 11 
May 15):
 Tuesday May 12th.
 11:00 am: Group office hours. See
instructions below.
 Also watch the Panopto Video Lectures for
final exam review
 Thursday May 14th
 Final exam will be held between 8 am and 5 pm.
 The next group office
hours will be held on Tuesday May 12th at 11:00 am.
 Join with zoom:
https://umd.zoom.us/j/5608509432
 Or by phone. Dial any
of these numbers:
+1 669 900 6833
+1 346 248 7799
+1 301 715 8592
+1 253 215 8782
+1 929 436 2866
+1 312 626 6799
 Meeting ID: 560 850 9432
 I will be available via zoom video conference for group
office hours during our usual class periods: Tuesday &
Thursday at 11:00 am and Friday at 10:00 am.
 Students are invited to attend group office hours and
discuss the course material with me and with each other.
 I am also available for oneonone phone calls or zoom
sessions via appointment. Contact me by email.
 Instructions for the Panopto Video
Lectures
 The video lectures can be found in the lefthand side menu
of Phys 410 on ELMS. Click on 'Panopto Recordings'.
 They are organized in folders according to homework
assignment.
 Important:
 After entering the folder, sort the videos *by name* to
see them listed in the order in which they are intended to
be viewed.
 There may be more than 10 videos in a folder. Scroll to
the bottom of the list and click on 'Results per page 25' to
see all the videos listed on a single page.
 Click here for
screen shot instructions.
 The videos run between two and ten minutes each.
 The filenames contain a date. For example, 033120
corresponds to March 31, 2020. This is the day that I
recommend that you watch the videos (or earlier).
 If you have difficulty viewing the videos for any reason,
such as limited internet bandwidth, please contact me.
 Index of Video Lectures:
 For Homework #7 (Hamiltonian Mechanics, Taylor Chapter 13):
 View by March 31: 11 videos, 51 minutes. Content: Solving
problems in Hamiltonian Mechanics, relationship between the
total energy and the Hamiltonian.
 For Homework #8 (Central Force Motion, Taylor Chapter 8):
 View by April 2: 9 videos, 53 minutes. Content: Reduced
mass, equations of motion, effective potential.
 View by April 3: 6 videos, 40 minutes. Content: Orbital
equation of motion, and its solution for the inverse square
law.
 View by April 7: 8 videos, 56 minutes. Content: Orbital
parameters and changes of orbit for the inverse square law.
 View by April 9: 7 videos, 60 minutes. Content: Orbital
precession.
 Midterm exam #2 review:
 View by April 10: 6 videos, 34 minutes.
 For Homework #9 (Rigid Body Kinematics, Taylor Chapter 10):
 View by April 16: 5 videos, 45 minutes. Content: Rotations
in 3D, omega vector, inertia tensor.
 View by April 17: 4 videos, 46 minutes. Content: Inertia
tensor general expression, and for a flat pancake and a
uniform cube.
 View by April 21: 7 videos, 54 minutes. Content:
Diagonalizing the inertia tensor, principal axes, and
principal moments.
 For Homework #10 (Rigid Body Dynamics, Taylor Chapter 10):
 view by April 28: 10 videos, 78 minutes. Content: Euler
Equations, Free Symmetric Top.
 view by April 30: 9 videos, 72 minutes. Content: Chandler
wobble, tennis racket theorem, gyroscope Lagrangian
 view by May 1: 5 videos, 54 minutes. Content:
Gyroscope precession and nutation.
 For Homework #11 (Noninertial frames, Taylor Chapter 9):
 view by May 5th: 5 videos, 52 minutes. Content:
Accelerating frames of reference, tides, rotating coordinate
systems.
 view by May 7th: 4 videos, 39 minutes. Content:
Centrifugal and Coriolis forces; free falling bodies.
 view by May 8th: 2 videos, 20 minutes. Content: Foucalt
pendulum
 Final exam review:
 view by May 12th: 3 videos, 34 minutes. Content: Taylor
Chapters 10 and 9.
 Course Info:
 Videos:
 Historical:
 Stokes Theorem
 Oscillations
 Orbital motion
 Torquefree
rotations: Tennis Racket theorem ("Dzhanibekov effect" in
Russia)
 Precession of a
torquefree symmetric top
 Precession of the equinoxes
 Gyroscopes, with
gravitational torque.
 Pseudoforces
 Wikipedia:
 Homework:
 Lecture Notes: