Part II - Dependence on Mass

1. Go this link to open the PHET simulation:

http://phet.colorado.edu/sims/html/pendulum-lab/latest/pendulum-lab_en.html

1. Make sure you press the reset button
2. Add a little friction (as is the case in real situations)
3. Now vary mass and measure period and record the data, keeping the length of the string the same. Also make sure to use the same amplitude through out!.

Mass (kg)	Period T (s)
0.20
0.30
0.40
0.50
0.60