Angular momentum rules in the NFL.

Think of the angular momentum vector for Jerome Simpson making this TD.



Excellent.

Who is spinning?

APOD Image: star trails over the Pico del Teide, on Tenerife in the Canary Islands.

It is a deep question: How can one be sure whether Earth spins or the vault of stars is spinning? Does the dynamical state of the stars affect what we observe here as to accelerations and inertia?

Aggie's and Jarvis' angular momentum project

I just uploaded to the angular momentum movie, with Aggie and Jarvis from Spring 2007, to iTunes U, You can download it and view it in compact form, known as the "summer_version."

BONUS points questions for exam 3

Last discussions announcement of Fall 2007

There is a new set of discussion areas in Webcourses, prep for midterm exam 3. One discussion area is for chapter 8 angular momentum concepts and another is for chapter 11, 12 and 13 concepts on the states and properties of matter.

A third discussion area is "BONUS points questions for exam 3" and I have already posted a sample question there. 2 bonus points for you if I choose your question!

Matching homework on angular momentum

More homework is up and running for Wednesday, HW 14. It contains a matching item about the two kinds of angular momentum.