welcome to Physics 352/354 !

2006 - 2007 Syllabus   and  Course Expectations      the official time

Honesty  Safety  Late policies

  test advice  and  test corrections
Walker physics website

AP Physics and FAQ/practice AP problems
North Carolina Physics Curriculum

How Stuff Works! and How Things Work      

 
Monday,
October 30
Tuesday,
October 31
Wednesday,
November 1
Thursday,
November 2
Friday,
November 3
class
none

students return from extended

faculty have countless meetings

 
 
 
 
what we'll do
in class


center of mass and its connection to conservation of momentum

find out what "work" really means

the work-energy theorem
more applications of othe work-energy theorem

in addition to doing lab A11
reading
(always done
before class)
 
when you come back from break, it would be nice if you had a chance to read about center of mass in section 9(7) 
7(1) 
7(2) 
read the back half of the lab A11 so that you know what you'll be doing in class today

bring your air table collision paper

7(4)
in-class
presentation


9(56a)
9(57)
7(3)
written
homework
(by 5 pm)

 
9(10, 27a)
 
 7(66, 21)
lab
 
starting today, the lab will be open so that you and your partner can meet and "do" your completely inelastic collision for Lab A11 on one of the air tables in the 2nd lab....
 
make sure you are wearing lab clothes when you come to do the collision

before coming to lab, read the first page of the lab carefully and make sure you follow the 10 guidelines in number 5 of the Procedure

you do NOT do any of the Results/Analysis until lab day Friday
(bring your spark sheet friday!)
 
turn lab books that contain A10
(momentum discovery lab)
 
other
 

 
 

 
Monday,
October 23
Tuesday,
October 24
Wednesday,
October 25
Thursday,
October 26
Friday,
October 27
class
we finish gravity 
we start momentum 
 
 
 
what we'll do
in class
problem solving on gravity and circular motion
connect to the lab that we did last Friday



test on
chapters 5, 6, 12
reading
(always done
before class)
 finish section 12(3)

know Kepler's 1st and 2nd laws
 pp. 253-254

(yes, we know you don't know what kinetic energy means yet)
9(4) 
 9(3)

[notice that we did section 9(2) in class yesterday?]

make sure that you know the lesson(s) of the hail and the rain for class today!
 
in-class
presentation
12(65)
12(75) appropos of the astronaut "event"
no show and tell today


written
homework
(by 5 pm)
12(20 part b)
&
12(29, except I suggest that you do part b first)
 
12(28)

clothes are being dried in a circular clothes dryer which spins the clothes in a vertical circle or radius 0.70 meters.... find the rotation frequency  (in rotations per second) such that the clothes are NOT in contact with the dryer wall when the
angle that the dryer wall makes with the horizontal
is 75 degrees

 
 
lab
 have you finished the calculations for lab A10 and written a conclusion?
 
 
 
 deadline fore finishing lab A10
other
 did you finish up the two circular motion problems that we didnt finish in class?
one of your practice problem solutions can go up on the bulletin board in the hallway
(take care not to put up a duplicate of one already there)
 
 

   
 
Monday,
October 16
Tuesday,
October 17
Wednesday,
October 18
Thursday,
October 19
Friday,
October 20
class
 
 
 
 
 
what we'll do
in class

lab quiz
we start gravity!

mg is NO LONGER down!

lab A10

there is a very short pre-lab,
but also put the data table in your lab book spread across two facing pages
reading
(always done
before class)
 p 166-167

(the last of chapter 6)
 
 12(1)

also bring to class a list of the main features of the gravity law,
including
a) what property of an object produces a gravity field?
(we call this the "charge" of the object)
b) what objects participate in ("feel") the gravity force
c) what's the direction?
d) what does the magnitude of the gravity force (between 2 "charges" depend on)?

 12(2)

know how to calculate the gravitational field strength g and what it depends on

also review the examples that involve calculating the gravity force with the new law
 pp 369 - 372
on Kepler's third law and the example of sun/mercury
in-class
presentation
6(51)

6(46)
look at problem 12(7).... but INSTEAD of doing it,
find the ratio of the gravitational force between earth and moon to the gravitational force between sun and moon
6(86)
written
homework
(by 5 pm)
6(49) except find N/mg instead
(hopefully you know why)
 
6(50), 6(83)
 
12(14)

and yes, 12(14) still requires a force diagram, and a net force equation

(I've removed 6(81) since I forgot that you have to prepare for lab)
lab
 
 lab books due
(A5, A6, A7AD, A8c completed)
due after class today
 
 
lab A10 prelab

lab A10 data
other
 
if your variable was Fnet in lab A6, make sure that you put your system mass up on your presentation
 
 

 
Monday,
October 9
Tuesday,
October 10
Wednesday,
October 11
Thursday,
October 12
Friday,
October 13
class
 
 
 
 
 two labs today

both done in
GREEN book

part of tomorrow's lab will be outside;
the temperature will be in the mid-50s;
therefore no shorts;
long-sleeve shirts or jacket/sweater required
what we'll do
in class
lab A7 part D
+
a walk-around quiz
circular motion:

pp. 162-165
more about circular motion

bring some (written) examples of circular motion with you to class

more circular motion;
today we do vertical circles


lab on horizontal circles
(a human merry-go-round)

and a lab on vertical circles
(the swings)
reading
(always done
before class)
 examples
6-4 (page 151),
6-5 (page 156),
active example 6-3 (page 157),
example 6-7 (page 161)

KNOW the magntiude and direction of the acceleration when something is traveling in a  circle

KNOW how they (the text book authors)  derived those 2 things

read the force diagram handout
(on BLUE card stock)
 
p. 166 
 
in-class
presentation
6(79)

6(2)

6(47)
written
homework
(by 5 pm)
bring to class:
prelab to
lab A7 part D  done in your RED lab book

by 5 pm: look at figure 6-34 (page 174) that goes with problem 6-40:

find the minimum coefficient of static friction necessary to keep the system motionless

 
6-26(b,c)

&

6(10)
 


6(71)

6(76)
lab
 
 
 
 
red lab books due
(with A5, A6, A7AD, A8b) completed and turned in Monday
other
 solutions to even-numbered problems have been posted (chapters 5 and 6)

 
 last chance for walk-around quiz credit: today at 6 pm
(since i have tutorial)
have you checked the "stray papers" folder recently?

there sure are a lot of papers in there

 
Monday,
October 2
Tuesday,
October 3
Wednesday,
October 4
Thursday,
October 5
Friday,
October 6
class
 
 
 
 
 
what we'll do
in class
lab A8c:
the acceleration
of elevators
inclined planes!

talk about kinetic friction
lab A7, part A

talk about static friction
reading
(always done
before class)
 5(7)
 5(5)
and example5-9, page 131

also read about inclined planes in TWTW
 
kinetic friction:
6(1) up to where static friction begins:

know the magnitude and direction of kinetic friction

know what the kinetic friction force doesnt depend on

finish 6(1)

know the direction of static friction and what the formula is for the magnitude of static friction
in-class
presentation
prelab to elevator lab done in your RED book

5(2)

5(58)
written
homework
(by 5 pm)
5(6) & 6(40)
 
5(5) except, INSTEAD, find the tension in the rope that pulls the waterskier AND the normal force of the water on the skier

5(33)
 
prelab to
lab A7,
part A ONLY done in lab book

6(37),
the problem we started in class on wednesday
lab
 
lab A6 poster due on  the bulletin board
(and in your lab book):
include
1) data table of ordered pairs
2) linearized graph
with linear fit
3) 5 column matching table
(the last two columns of the matching table are
expected value of the fit parameters
(slope & intercept)
&
% difference between actual fit parameters and expected fit parameters
4) conclusion
5) statement/signature by all participants that work was shared equally
 
 
 we do lab A7 part A
other
 have you picked up The Way Things Work?
(one to a dorm room)




 
 

physics pages for august-september 2006