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xkcd #2935: Ocean Loop (imgs.xkcd.com)

submitted 3 months ago by randomaccount43543@lemmy.world to c/xkcd@lemmy.world

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https://xkcd.com/2935

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I can't believe they wouldn't even let me hold a vote among the passengers about whether to try the loop.

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[–] TimewornTraveler@lemm.ee 0 points 3 months ago (1 children)

so mass doesn't factor into the equation??? a Jetski made from aluminum would need the same speed as from osmium?

[–] renormalizer@feddit.de 0 points 3 months ago

I think so. At the apex of the loop gravity balances centrifugal force, Fg = Fc, when going the minimal speed necessary to get through the loop. Fg = m g, Fc = m v^2 / r. So mass m drops out of the equation.