Friction Lab and Gecko Video

Follow this link for the Friction Lab Report Guidelines and scoring guide.

https://docs.google.com/document/d/1MaY_4GOS8PUbUw6dAtp6Us_UVFLOHyfN657sR109U5Q/edit?usp=sharing

The lab is due Dec. 7.  Please include it in your Google Drive Lab Document as the first item.





In some classes I mentioned that Geckos use frictional force to climb surfaces in a surprising way - not through surface irregularities and tiny hooks, but through electrostatic attractions.

Here is a link to a NOVA episode about it.  The gecko section starts at about the 11 minute mark.

http://www.pbs.org/wgbh/nova/tech/making-stuff.html#making-stuff-smarter

Unit 4 - More Force Topics

This unit focus on various additional topics in forces including inclined planes, adding forces in two dimensions, friction, and circular motion.  

Goals
• Be able to add forces in two dimensions.
• Determine the normal force, and the parallel and perpendicular components of gravity for inclined plane problems and solve for acceleration.

• Calculate the frictional force when given the coefficient of friction and vice versa.
• State and apply equations for centripetal acceleration and force.

• Distinguish between the centripetal force and the fictitious centrifugal force.
• Analyze examples of circular motion in terms of Newton's three laws of motion.



Important Dates
Friction Lab : due Mon/Tues Dec. 7, 8.
Homework: Nov. 22, Nov. 29  and Dec. 8, all at 10:00 pm
Unit Test: Dec. 9 and 10

This unit corresponds to parts of chapters 6, and 7 in the book.

Review Sheet Keys for Force unit

 You can start the review packets now.

https://docs.google.com/file/d/0B54jRZBDezIHNVplQ1llazI2YkU/edit

Here is the key also.

https://drive.google.com/file/d/0B54jRZBDezIHYU4wOEZpOXhWdkE/view?usp=sharing