this post was submitted on 01 Dec 2023
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The SAT Question Everyone Got Wrong (www.youtube.com)
submitted 9 months ago by [email protected] to c/[email protected]
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[–] [email protected] 10 points 9 months ago

There's one extra-rotation from an external perspective due to the revolution of one around the other. So the formula is r1 / r2 + 1.

This extra-rotation doesn't appear from the point of view of the circles, or if you consider the circles as two stationary gears