3-10-09

Well to everyone's approve the unit 8 test has been pushed back to next Friday, on account of PSSA testing for juniors next week. Mr. Manning performed a demonstration using a CD (compact disk) case to show the centripetal force when he swings it in a circler motion. Even though he is pulling the string inwards the case still goes into circler path. When he is swinging it the case wants to travel in a straight line but he pulls inwards on the string keeping it in a circular path. he then added a cup of water on top of the CD case. He was able to swing the CD case around with the cup of water on top, the cup stayed on top of the case, and the water stayed in th cup. The demostration was performed again, this time with out water in the cup, and the cup went flying off the CD cover before it could make one circle. I said it was just a simple party trick and he did it again, once again the cup left the top of the CD cover before the first pass.

We then shifted gears and started to talk about the lab that we collected data on during the last two class periods. We were instructed to graph the data that we collected and to turn in 5 graphs to represent the data. We then broke up into smaller groups to work on drawing our graphs.

Well after realizing that some kid, stole the camera, I spent the next 10 minutes thinking of a way that i could attain a picture to place in today's TPJ. Heres a picture of Scott working on his lab



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