5/01 The solutions to Test 5 are now available in
the Noble Library Copy Center.
My Exam-Week schedule will be similar to my
regular schedule. I will have office hours
as usual. I will also be available in my
office during usual class hours and my help-
study hour. Mr. Stangel is busy with exams
this week, so his students should stop by
my office to get their tests and HW.
EXCEPTION: I have a dentist's appointment
at 2 PM on Wednesday 5/02. I will return
to the office ASAP once it is over.
4/25 There will be a nighttime help session
at 7PM in PSF-173 on Thursday 4/26. No
test hints will be given, no new material
will be covered, and I will not do HW
problems. I WILL answer your questions
about concepts that you do not understand.
Also, Mr. Foy is holding a review session
in PSH-563 on Thursday between 5:00 and
7:00 PM.
4/20 There is an error in the syllabus. At the top of page 3,
you will find the following statement:
"Homeworks which would be due after the final recitation
meeting can be turned in at the beginning of the final exam."
This is incorrect. These HWs must be turned in at the
beginning of Test #5 on Mon Apr 30.
4/17 The solutions to Test 4 are now available in
the Noble Library Copy Center.
4/09 There will be a nighttime help session
at 7PM in PSF-173 on Wednesday 4/11. No
test hints will be given, no new material
will be covered, and I will not do HW
problems. I WILL answer your questions
about concepts that you do not understand.
Also, Mr. Foy is holding review sessions
in PSH-360 on Tues and Wed between
3:30 and 5:30 PM.
4/06 The material we are covering for Test 4 is
slightly different from last year. On the
Old Tests, you should not only study
Old Test 4, but also MC#1 and Problem #1
from Old Test 5.
4/03 There was an error in the posted answers
to even-numbered problems. The error was
in Serway Ch 11, problem 7(b). The error
has now been corrected. I apologize for
any confusion this may have caused.
3/22 The solutions to Test 3 are now available in
the Noble Library Copy Center.
3/07 There will be a nighttime help session at 7PM
in PSF-101 on Monday 3/19. No test hints will
be given, no new material will be covered, and
I will not do HW problems. I WILL answer your
questions about concepts that you do not
understand.
3/01 I made a mistake during Wednesday's lecture.
In the RAISING THE PENDULUM BOB example I
said that the bob is raised with constant
velocity. This is of course not true. The
bob is raised with constant speed. The
direction is changing and the acceleration
of the bob is the speed squared divided by
the length of the string. The error doesn't
change anything that we did. GBA
2/28 HW Problem #10 in Chapter Six has a misprint.
Part (b) should read as follows. "(b) Find
the work done on the rope by this force."
2/27 The solutions to Test 2 are now available in
the Noble Library Copy Center.
2/19 There will be a nighttime help session at 7PM
in PSF-173 on Tuesday 2/20. No test hints will
be given, no new material will be covered, and
I will not do HW problems. I WILL answer your
questions about concepts that you do not
understand.
2/13 I made a mistake during Monday's lecture. In our
first example, the 4 and 6 kg masses hanging over
the pulley, I solved for the acceleration of the
system using two different methods. In method
two, we used the full vector notation. In my
explanation of that method, I said that we needed
to choose the positive direction in the first
step. This is FALSE. We can do this, but it is
not necessary. Alternatively, in the first step,
we may decide on the direction of the acceleration
of each mass, and write our 2nd-law equations so
that both sides of each equation are guaranteed to
be positive. This is what we did, so our work was
correct, but I described it badly. Happily, when
we did the final example, in which the 6 kg mass was
put on a 30 degree slope, I did describe this step
correctly. As I said then, if you decide incorrectly
for the direction of acceleration, and then you do
the work logically, you will get a negative value for
the magnitude of acceleration, which is nonsense.
2/06 The solutions to Test 1 are now available in
the Noble Library Copy Center.
1/31 There will be a nighttime help session at 7PM
in PSF-173 on Thursday 2/01. No test hints will
be given, no new material will be covered, and
I will not do HW problems. I WILL answer your
questions about concepts that you do not
understand.
1/26 There was an error in the posted answers
to even-numbered problems. The error was
in problem 8, Ch 2. The error has now
been corrected. I apologize for any
confusion this may have caused.
1/22 The old tests are now available in the
Noble Library Copy Center.