Today in class we did a lab that looked at the relationship between the velocity of an object undergoing circular motion and the force that causes that motion. We will then extrapolate this to look at the motion of the stars in galaxies and how they are moving much faster than the forces visible suggest they should. This is the proof of the existence of dark matter. Students spent the class today gathering data and began analyzing it. I have developed some notes that should help students analyze this data. I will explain it in class. It is linked here.
Students who were absent can use data gathered from friends in class. Or you can use the sample data set that I have linked here. Just choose 1 set of data. This lab report will not be due until next week. We will talk about this in class.
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