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.

Unit Three - Newton's Laws

Goals

1.      Draw Force Vectors.

2.      Calculate Weight.

3.      Solve Problems with Net Force.

4.      Know that when an object is at rest or moving with constant velocity that F_net = 0 and all of the forces are balanced.

5.      Understand what terminal velocity is and how it is reached.

6.      Be able to explain why all objects in freefall have an acceleration of 9.8 m/s²

7.      Understand that forces are interactions between two things and that each object exerts an equal and opposite force on the other.

8.      Know Newton’s Three Laws of Motion by name.

In general, understand Newton’s 3 laws and apply them to explain motion.

Lab Due Date:  Nov. 4/5 

Homework due in the evening of Oct. 27, Nov 3, and Nov. 13

Test Date Nov. 18 and 19  

More Two Dimensional Review

Answers are on the last page.Motion in 2 Dimensions Practice

Vector Review Key

Review Answers 2013

Unit Two – Vectors and Kinematics in Two Dimension

Covers Sections 4.1, 4,2 and 7,2  or  continue reading from the links on the physics tutorial website http://www.physicsclassroom.com/Class/vectors/

Unit Goals:
1. Know that perpendicular vectors are independent
2. Add vectors graphically with parallelogram and head to tail methods.
3. Use trig and Pythagorean theorem to find resultant.
4. Break vectors into perpendicular components graphically and with trig.
5. Solve motion problems in 2D.

Test - Thursday Oct. 16 and Monday Oct. 20

Homework due 10:00 pm Monday the 6th, and Monday the 13th.