Balancing a Ruler
How to find a ruler's centre of gravity.
More videos with Tadashi Tokieda: http://bit.ly/tadashi_vids
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This is Numberphile. We mainly post videos about mathematics and just numbers in general.
How to find a ruler's centre of gravity.
More videos with Tadashi Tokieda: http://bit.ly/tadashi_vids
Sixty Symbols (our physics channel): https://www.youtube.com/sixtysymbols