I
wanted to let everybody know that I won't be at class on Friday. I'm going to
be out of town for a funeral. Enjoy the much deserved “rest”.

For Monday read
14.1- 14.5. The first few sections just introduce Newton’s Law of Universal
Gravitation, which you have already seen in lab. While that lab may not have
produced the most beautiful data, which is a sign of it’s difficulty,
the fact that you can even construct a tabletop experiment to qualitatively
see the effects of gravity is amazing.

Sections 4
& 5 are really the grand finale of the semester. Here we combine nearly
everything we have studied- Newton’s Laws, circular motion, conservation
laws and gravity. With all of these tools we can now explain the motion of the
planets and other astronomical bodies. No small feat!

In addition to the reading,
there are some exercises due (from out text): 14.1P, 14.5P, 14.11P, 14.14P.
I will return your tests Monday, and corrections will be due by Friday.

Also, I wanted to give you some
advance warning on something we’ll be doing in class on Friday. Since
you won’t have a chance to earn correction points on the final, I wanted
to give you the opportunity to earn some points another way. On Friday we will
take the diagnostic quiz which we did at the beginning of the semester. For
every question you get right on that quiz, I will add a point to your final
score. This is meant not only to help you earn some points, but also encourage
you to avoid last minute cramming for the final. The quiz covers most of what
we’ve discussed this semester- kinematics, forces, Newton’s Laws,
conservation off momentum, etc.

I’ll see everybody
back in class Monday morning. Enjoy the weekend, and I apologize for the cancellation.

Dr. Jeff