Aug 29

photo credit: justshootingmemories via photo pin cc

This is a Foucault Pendulum.   It moves back and forth, but over the course of 24 hours, it will knock down all the pegs in the circle because of the earth's movement.

How would you create an energy diagram(s) for this over the course of one swing?  Over the course of 24 hours?   Do this individually, and explain your reasoning.

Do the same with this.


Assessment:  Springs and Pendulums

You will create your own Newton's Cradle.   In this case, the balls act as a type of spring, so imagine how you could use the concept of Hooke's Law to calculate a spring constant for the system.  Also, calculate the period of the pendulum of one ball.

August 27

So, on Friday, you read about the concept of work, W=F*d, where work is in JOULES (jewels), F is in Newtons, and d is in meters.

In other words, Work is another way to refer to kinetic energy when a spring is stretching.


W = F* d
KE = 1/2 mv^2

F = kx

It's the combination of these three formulas that gives us the formulas for spring constant energy.

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Today, we're looking at the interaction between the different types of energies.  To do this, you'll be working on two worksheets.  Before you do that, we'll look at some ways to represent energy

Worksheet A

Worksheet B

Aug 24

Sorry guys, but today is a reading and processing day.  You need to start with the definition of work  and work through the four consecutive pages until you get to this page.   Take your time.  Answer the questions together, and note anything which confuses you.


If you have questions, please text me.

Aug 21

Hooke's Law Activity

http://phet.colorado.edu/en/simulation/mass-spring-lab

Read

http://www.physicsclassroom.com/class/waves/u10l0c.cfm

http://www.physicsclassroom.com/class/waves/u10l0d.cfm

Day 1and 2: Intro to Waves

Please read:

http://www.physicsclassroom.com/Class/waves/u10l0a.cfm
http://www.physicsclassroom.com/Class/waves/U10l0b.cfm

When you get done, give me a top five points for each page.  This should take 15-30 minutes.

LAB on Periodic Motion: Create a series of pendulums of different length, different masses, and make them swing at an angle of no more than 10 degrees each way. Document the period of 10 swings and 1 swing in this effort. Organize your data in a spreadsheet on Google Docs. Share the spreadsheet with one another and with me at marciapowellATw-del.... using the share feature. As you go along, write any observations that you make on a sheet of paper.