Watch gravity pull two metal balls together

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The cavendish experiment shows that even the very week force of gravity can be seen between two room scale objects. Even with the naked eye.

MyLundScience's video on the Cavendish experiment: https://youtu.be/MbucRPiL92Q
A video derivation of the Cavendish experiment equation: https://www.youtube.com/watch?v=RacOKBBdMeQ

Experimental procedure: https://www.ld-didactic.de/documents/en-US/GA/GA/3/332/332101de.pdf
Equipment user manual: https://www.ld-didactic.de/documents/en-US/EXP/P/P1/P1131_e.pdf

Chapters:

00:00 the beginning
00:44 The Cavendish experiment
07:30 I get it working!


Corrections:

4:53 This isn't a fair comparison. Actually, if you changed the mass of the hanging masses in the experiment, it WOULD change the deflection angle. That's because the value of T in the equation would change. The torsion pendulum would oscillate more rapidly with lighter masses. Thanks James Gilbert.

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