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1.  We went over the problem set homework from chapter 11

2.  Mr. Kleiner gave a lecture on tipping/toppling and lowering the center of mass

3.  We watched a ring and a disk of identical mass roll down a ramp and witnessed that the disk rolled down faster.  Want to know why?  Read chapter 12

homework: read all of chapter 12, quiz tomorrow

1. We took a reading quiz on sections 11.1 to 11.5 in the book

2. Mr. Kleiner gave a brief lecture on center of mass, center of gravity, and torque

3. We watched a video that analyzed the center of gravity and parabolic motion of a boomerang and a tennis racket being tossed into the air.

homework: 1,2,3,4,6, 7, 20, 25,29

1.  We went over the answers to the circular motion worksheet

2.  We performed a mini-lab in which we balanced a 500g and a 200g mass across from each other on a pivot point with a meter stick.  Students discovered that Fd = Fd

homework: Read 11.1 to 11.5 and be ready for a reading quiz tomorrow

1.  Today we continued our lecture and discussion of circular motion.  We discussed that centripetal force is required for circular motion.  Centrifugal force is not a real force that contributes to circular motion.

2.  We went over the homework problem set from chapter 10

3.  For the rest of class students were able to work on tonight’s circular motion homework worksheet

homework: circular motion worksheet

1.  Mr. Kleiner gave a lecture on circular motion today.  We learned that velocity, acceleration, and force have definitions in the circular realm just as they do in the linear realm.

2.  Mr. Kleiner explained that the Rube Goldberg project would be turned in by video on youtube.  Please look at the Rube Goldberg Project document for all specifications for this project.

3.  We briefly talked about the economy.  Mr. Kleiner explained how Russia’s currency, the Ruble, is in trouble and that lots of layoffs are already occurring in the United States and elsewhere.

homework: start working on your Rube Goldberg projects

1.  Mr. Kleiner introduced the Rube Golberg project to the class today.  We watched several videos of rube goldberg machines from youtube.  The project is due November 10, 2008.  We will signup the teams tomorrow. 

2.  Mr. Kleiner told students about his experience at the University of Missouri-Columbia

homework: problems 3, 4, 5, 6, 8, 9, 14, 24, 25, 26, 49, 56 from chapter 10

1. Today we took exam #3 covering chapters 8 and 9 on momentum and energy

homework: Read all of chapter 10.  There will be a reading quiz tomorrow.

1.  We spent the entire day reviewing for tomorrow’s exam on chapters 8 and 9 (momentum and energy)

2.  Students who did not want to review were able to read science articles in the back of the room instead.

homework: study for exam #3.  look at the practice exam in the handouts/worksheets section of this website for some study help

1.  Mr. Kleiner collected the horsepower lab.  We discussed the power and energy implications of the lab.  The average household uses 1000W continuously, which is 16 60W lightbulbs 24/7.

2.  Students worked on exam #3 practice sheet 1 individually for most of the period and then Mr. Kleiner took questions at the end of the period.

homework: study for exam #3 on Wednesday

1.  We performed the horsepower lab today.  We ran up a ramp and calculated the horsepower that a person can generate.

2.  We watched a eureka video about mechanical advantage and efficiency

3.  We listed to the following story from the story corps archive

homework: finish the lab to turn in on Monday.  Show your work and units!  Next exam is on Wednesday.

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