Comments by "Ludmila Ivanova" (@ludmilaivanova1603) on "I Took an IQ Test to Find Out What it Actually Measures" video.

  1. it would be better explained if we think about the centre of the small circle and its travelling distance which will be 2pi (R+r). At the same time, the point on the small circumference travels 2pir distnance. The ratio of the two gives us the number of revolutions.
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