--- //[[giree@physics.oregonstate.edu|Elizabeth Gire]] 2018/09/19 09:09//{{page>wiki:headers:hheader}}

%% Instructions:
%% (xx = COURSE; yy = TOPIC; zzz = NAME)
%% 1. Replace "Title" with the name of the SWBQ.
%% 2. Replace "The Question" with the question.
%% 3. Change yyswxxzzz everywhere (2x) to the basename of this file.
%% 4. Upload the PDF and PPT versions of the question.
%%    (Make sure to use the same basename.)
%% 5. Change xx in the 2-letter acronym in the course footer to reference
%%    the correct course.
%% 6. Change yy in the 2-letter acronym in the topics footer to reference
%%    the correct topic.
%% 7. Add appropriate discussion under "Context" and "Wrap Up".
%% 8. Delete these instructions when done!

====== Review Angular Momentum ======


===== Prompt =====

** "Write down something you know about angular momentum." **


===== Context =====

This [[strategy:smallwhiteboard:|SWBQ]] is meant to jog students' memories about what they know about angular momentum from introductory physics as preparation for understanding precession and Stern-Gerlach experiments.





===== Wrap Up =====

Want:

  * Vector
  * Symbol is $\vec{L}$ or $\vec{S}$
  * direction determined by a right hand rule (briefly demonstrate)
  * same direction as the angular velocity
  * Is conserved if net torque is zero
  * $=I\vec{\omega}$
  * $\tau_{net} = d\vec{L}/dt$ (prompt for this if none appear) (possible segue SWBQ about calculating torque)
  * $=\vec{r}$ x $\vec{p}$ with picture  (possible segue SWBQ about calculating cross products)
  * Dimensions = energy * time = torque * time = length * momentum = mass length^2/ time 

Be on the lookout for:
  * confusion/connection with linear momentum
  * missing vector symbols
  * highlight multiple representations
  * "Is conserved" (isn't unless net torque is zero)

%%{{swbq>vcswyyzzz.ppt|Powerpoint slide}}
%%\\\\
%%{{swbq>vcswyyzzz.pdf|PDF slide}}

{{page>wiki:footers:courses:spfooter}}
{{page>wiki:footers:topics:cmswfooter}}