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Cake day: May 4th, 2024

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  • Why your spoiler is wrong:

    The gravitational force between two objects is G(m1 m2)/r²

    G = ~6.67 • 10^-11 Nm²/kg²

    m1 = Mass of the earth = ~5.972 • 10^24 kg

    m2 = Mass of the second object, I’ll use M to refer to this from now on

    r = ~6378 • 10^3 m

    Fg = 6.67 • 10-11 Nm²/kg² • 5.972 • 1024 kg • M / (6378 • 10^3 m)² = ~9.81 • M N/kg = 9.81 • M m kg / s² / kg = 9.81 • M m/s² = g • M

    Since this is the acceleration that works between both masses, it already includes the mass of an iron ball having a stronger gravitational field than that of a feather.

    So yes, they are, in fact, taking the same time to fall.








  • pumpkinseedoil@mander.xyztoScience Memes@mander.xyzOxbowin'
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    22 days ago

    Just recently my country exchanged land with a neighbouring country to adjust for the changes of water, each giving and gaining the same amount of land. When water marks the border it’s much easier to know when you’re crossing it.

    Edit: looked it up: in march we (Austria) traded 239 m² with Liechtenstein