Use www.physicsclassroom.com

to do this worksheet:
http://www.physicsclassroom.com/getattachment/curriculum/circles/circle.pdf
Test on this

Videos:

http://www.learnapphysics.com/apphysicsb/circular_motion.php


Centripetal Force Review:


Notes:

On the following problem:
When a wheel is rotated through an angle of 33o ,a point on the circumference travels through an arc length of 3.7 m. When the wheel is rotated through angles of 33 rad and 33 rev, the same point travels through arc lengths of 212 m and 13 ×102 m, respectively. What is the radius of the wheel?
Work the first problem forget the middle sentence.

On the distance the moon falls in a time period problem.

You have to play with the proportions indicated below.
earthmoon.png


rollercoaster.png


Rotational.png

Labs:
Lab 1

Lab 2Do the lab on page 274 of your book do the part "Constant Radius with Varying Force: Do the Analysis and interpretation that apply to your data. Do two trails at each force and if the number of rotations are not consistent then do a third trial. Write a conclusion paragraph about what you learned.
Lab 3Do the lab on page 274 of your book do the part "Constant Force with Varying Radius: Do the Analysis and interpretation that apply to your data. Do two trails at each force and if the number of rotations are not consistent then do a third trial. Write a conclusion paragraph about what you learned.

Discussion:
MarleeDW Mar 1, 2010 7:03 am
-Chapter 7 in the physics book has great examples that helped me answer the majority of my questions.
-Make sure when you plug in numbers for the formulas that you use the correct units. (ex. most formulas call for radians, not revolutions. But it's best to check.)
-The Chart on Page 251 has lots of formulas that will help you. This chapter uses the formulas on the board that we have been using all year.
-Remember that 1 revolution is equal to 2 x Pie x Radians which is also equal to 360 degrees.
-Also remember to use 9.81 as your gravity, not 10.
-Make sure you read the problems correctly and writing down all your givens helps determine the formula you will need to use.
-For the lab, the string and cork are in the red box beside computer four and five. You will need to go out in the hall so you don't hurt anyone. There are marks for different lengths already marked on the string. You and your partner will need to do the lab together.
GOOD LUCK :)
Marlee Williams

nchsdowdyk Mar 1, 2010 7:30 am
this packet is relatively easy.. all you have to do is look up all the formulas and use them... be sure you check all of your numbers. I missed some of mine due to calculation errors. when you have a problem that you just can't find a start to just look at all of your givens and write them down. then choose the formula that has all of the givens in it. just think of everything as a circle and you should be ok. this is mostly common sense. good luck

cas4555 Mar 26, 2010 7:14 am
-For the lab, the string and cork are in the red box between computer four and five. You will need to go out in the hall so you distract or hurt anyone. There are marks for different lengths already marked on the string from several partners before. You and your partner will need to do the lab together but make sure you are following the chart online so that you are doing the correct part of the lab on your part!
Alex Stuart

CSpears Apr 14, 2010 7:12 am
For this chapter you will need your book and the equations that are on the side board. The equations are used the same way but you have different symbols. Also, 1 revolution is equal to 2(pie) radians is equal to 360 degrees. You will need that factor to change units for a lot of the problems. They are basic problems that shouldn't take you long to finish. Take them step by step and watch your equations. Also, it would help you if you worked the equations to equal what you are wanting before you start the actual work. In the lab, watch to what part you are assigned to. Each assignment has its own work and graph to do. If you need help just ask questions. It's really not that hard. Don't over think it all. You should also be able to finish early to help with the lab. Good luck. CSpears