Circular Motion/Work and Energy Review

Scribe Post

This is Lindsay, the scribe person for today.

In class, we watched a video that showed us examples of circular motion.

One example would be the Merry-go-Round. It has a fictitious Coriolis force. I think that's what the video told us, I'm not quite sure, sorry.

Another example was the roller coaster. The liquid in the container (the accelerometer)changed levels when it went around the loop.

The last example we saw was the carnival rotor ride. There was an outward inertial force. The people in the ride were in a state of equilibrium because of the artificial gravity. They were being pushed against the wall, away from the centre.

After the video we corrected the questions 13-17 on pages 152 and 153.

Ms. K showed us a free body diagram on the smartboard. The coin was traveling in a circular path and it experienced a gravitational force, normal force, and force of friction.

We're done with circular motion! (well not until the test...but you know what I mean)

Lastly, we received handouts about Work and Energy!

Do your homework and I hope you guys handed in your labs.

I choose you, bale-0ut! for the next scribe.

circular motion....

wow i can't believe it...Ms. K wants me to be the scribe today.. well uhhmmm i will start with the first thing that we did a while ago... we answer the exercise that she gave us before we had our spring break. Its all about circular motion and the first page was about centrepetal acceleration...just want to remind all of you guys the formulas on this topic..

Centripetal Acceleration:

1. average velocity- v=2∏R/T

2. centripetal acceleration- Ac=4∏²R/T²

Centripetal force:

1. centripetal force- Fc=ma

After we checked our excercise sheet Ms. K gave us a hand out about Centripetal and Centrifugal Forces..and if you have read that sheet,you will see two examples of these force,one example is the spinning tub in the washing machine and the other one is the automobile that round a corner,but the best example for me is the spinning tub in the washing machine,well if you read it you'll understand this topic better...

and that's it for now..i can't remember some stuff we did a while ago=)

*richard don't want to email Ms. K because he don't want to be the next scribe*=>

uhhmmm.. next scribe would be "Lindsay"

Uniform Circular Motion

General information about circular motion
http://en.wikipedia.org/wiki/Uniform_circular_motion

Referenced from http://www.glenbrook.k12.il.us/gbssci/Phys/mmedia/circmot/cf.html