Wednesday, April 9, 2014

Net forces activity

Part 1:  use the applet found at http://phet.colorado.edu/en/simulation/the-ramp

First, take a look at the page found here.   http://phet.colorado.edu/en/contributions/view/3143 It has lots of labs, some good, some bad, that help people to figure out the basics of mu, horizontal force net, and forces on a ramp.

Pick one of these labs and go through it. Do not pick the same lab as another group at your table. TEAMS ABOVE THREE WILL NOT BE ACCEPTED.   Turn it in today.

Part 2:  to be done individually, on paper, while sharing the computer applet.

DESIGN TEST:   Last Friday, we had a net force worksheet that we have not graded--yet.  You will need to use this applet to help design a student lab that is not boring and easier to understand regarding net force on a hill.  The lab should create understanding for mu on a hill, force body diagrams, and use net forces to answer the following question:   Does the mass of an object change the mu of an object moving with net force along the ramp?.   

State the purpose of your lab:
Give directions, as needed:
Collect evidence:
Tell me what is analyzed:

Part 2 is due on Friday.

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