Newton's Universal Law of Gravitation Introduction - The Big G Equation (7:19)
Understanding Newton’s Universal Law of Gravitation. Including a dramatization of The Cavendish Experiment and force visualization via qualitative examples. This is an AP Physics 1 topic.

Content Times:
0:11 Reviewing the standard Force of Gravity or Weight equation
0:56 Newton’s Universal Law of Gravitation
1:48 Defining r
2:47 The Cavendish Experiment
3:52 Visualizing qualitative examples
5:59 When to use the two Force of Gravity equations
  • An interesting point: According to The University of Oxford Department of Physics, "Cavendish used the balance in 1798 and measured the mean density of the earth at 5.48g/cm3. This implied that G was 6.754x10-11m3s-2kg-1 although Cavendish did not derive it." Therefore Cavendish actually never calculated G. I apologize for this oversight! Thank you to Dan Burns for pointing out this error.
  • Thank you to Bronson Hoover of dnbstudios for letting me use his original composition Bèke as Henry Cavendish’s music.
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  • Thank you to Scott Carter, Jonathan Everett, and Christopher Becke for being my Quality Control team for this video.​
  • Thank you to Youssef Nasr for transcribing the English subtitles of this video.
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