This Unit includes: Chapter 12 Universal Gravitation
                                           Chapter 13 Gravitational Interactions
                                           Chapter 14 Satellite Motion
                                      
Gravity Lecture Video:  
World's Biggest Vacuum Chamber Video:
How Long to Fall Through Earth Video:
Gravitational Waves Video:

You need to make a graph for your Cavendish Lab.  Use the following video if you are not good at Excel or Sheets: