What if Earth grew 1cm every second?

Описание: Get a copy of What If? 2 and Randall’s other books at: https://xkcd.com/books
More serious answers to absurd questions at: https://what-if.xkcd.com/

How long would it take for people to notice their weight gain if the mean radius of the world increased by 1 cm every second? (Assuming the average composition of rock were maintained)

IMPORTANT NOTE
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We would like to apologize for making two mistakes in this video - thanks to viewers for pointing them out!
1) Silly error: after the Chandrasekhar limit, the Earth would first become a neutron star. Only after it gained even more mass would it pass the Tolman–Oppenheimer–Volkoff limit and finally become a black hole
2) Subtle error: if the earth kept expanding with a constant density, eventually it would become a black hole because the Schwarzschild radius of a black hole is proportional to its mass M, while the radius of a sphere of constant density is proportional to M^(1/3), and eventually M gets bigger than M^(1/3)


Credits
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Randall Munroe | Narrator
Henry Reich | Writer & Director
Lizah van der Aart | Illustration and Video Editing
Ever Salazar | Chief Chaos Controller
Know Art Studios | Music & Sound Effects

What If? The Video Series is the official adaptation of the What If? books by Randall Munroe and is produced by Neptune Studios LLC.

Randall Munroe is the author of the New York Times bestsellers What If? 2, How To, What If?, and Thing Explainer; the science question-and-answer blog What If?; and the popular web comic xkcd (https://xkcd.com). A former NASA roboticist, he left the agency in 2006 to draw comics on the internet full time.

Henry Reich is the creator of MinutePhysics and executive producer of MinuteEarth and MinuteFood and founder of Neptune Studios LLC (the parent company for all three youtube channels).

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