Unit Four Review and Answers

Here is a link to the Unit Four Review Questions.

https://drive.google.com/file/d/0B54jRZBDezIHdzV2c0NiVG5rdms/view?usp=sharing

And another to the Answer Sheet.

https://drive.google.com/file/d/0B54jRZBDezIHUGRGMVFTb3MzR2s/view?usp=sharing

Gecko Friction

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

Friction Lab

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. 12.  Please include it in your Google Drive Lab Document as the first item.

Sixth Period Physics with Second Grade Visitors

Unit 4: More topics in Forces

This unit focus on various additional topics in forces including inclined planes, adding forces in two dimensions, friction, circular motion, and Newton's Universal Law of Gravitation.  

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.

• Solve problems with Newton's Universal Law of Gravitation.

Important Dates
Friction Lab : due Friday Dec. 12
Homework: Nov. 24 and Dec. 15, both at 10:00 pm
Unit Test: Dec. 18 and 19

This unit corresponds to parts of chapters 6, 7 and 8 in the book.

Review Packet for Forces Unit

The test will be Nov. 18 and 19.  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

Lab Two - Newton's Second Law

The form linked to below gives you the questions to answer in your next lab report.

Please copy the questions from it into your lab document and answer them.  Also insert the diagrams, data tables and graphs as requested.

https://docs.google.com/document/d/1HxInZrn-IwDish4SOKo0-T-9SGX3Z-hBWkaSAdIgyBU/edit?usp=sharing

Please make the new report the first thing in your lab document - your googledocs file.

Remember to give me the ability to edit your document.