Concepts of Physics
Chapters 9 & 11
Other Chapters
Color Key
Black: In Class
Green: Due/Test
Red: Homework
Blue: Related links
Updated 2.14.2010
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Wednesday, February 10 No School Snow Day
Thursday, February 11 and Friday, February 12 No School Teacher Inservice Day
Monday, February 15
- Read Chapter 9
- Intro. to Circular motion
- Rotation, revolution, axis, linear speed, tangential speed, rotational speed
- Use Earth as example of rotation and revolution - rotates once per day (rotational speed) and revolves around the Earth once per year.
- Calculate Earth's rotational speed about its axis (earth's radius is 3956 mi and rotational period is 24 hr) and about the sun (earth is 93 million mi from the sun and revolutional period is 8766 hr).
- Centripetal force and centrifugal force
Tuesday, February 16
- Intro. to Circular Motion Lab
- Work on Circular Motion Lab
Wednesday, February 17
Thursday, February 18
- Discuss Circular Motion Lab
- Centripetal force vs. centrifugal force
- Demos: cup on board, football on string, discuss forces when going around a corner in a car
Friday, February 19
- P. 133, 712 due
- Discuss homework from today and yesterday
Monday, February 22
- P. 134, 1923 due
- Gyroscopic motion - bicycle wheel
- Bicycle balancing - are training wheels necessary?
- Read about the Segway scooter
- Artificial gravity in rotating space ship
- Applications of circular motion - Concept Development 9-1
Tuesday, February 23
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