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Draw an iceberg and see how it will float

joshdata.me

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Re: Draw an iceberg and see how it will float

#51
post #50

Earlier quoted context omitted.

There isn't necessarily just one. A rectangle-ish form could have 4.

Yes, rectangle would also be degenerate. Basically any configuration where adding an epsilon weight somewhere generates a non-epsilon shift so to speak.

You mean unstable?

Re: Draw an iceberg and see how it will float

#52
post #16

Got a bit frustrated because I couldn't get anything except a flat surface above the water, then read the tweets below and realised that's the entire point: https://threadreaderapp.com/thread/1362557149147058178.html (Many thanks to Elon for making it impossible to read more than the first tweet on x.com without an account...)

My mental model is of each side (think left/right in 2-D) of the iceberg competing with the other side to float to the surface by rotating the iceberg around it's center of gravity. The only stable positions are where these left/right rotational forces are balanced. If an iceberg is currently floating in a vertical orientation where more of it's mass to one side of it's center of gravity (bottom half) is underwater c…

That’s exactly it. An iceberg can’t stay "vertical" for the exact same reason that a pencil can’t stay vertical. Even if perfectly balanced, the equilibrium is unstable.

Re: Draw an iceberg and see how it will float

#53

Author here. Glad to see this making the rounds again after a few years. Go science! Support your local climate scientist!

This is very cool. I found shapes that do not work well with the simulation: a very wide and narrow shape (like a needle) oscillates wildly and does not seem to stop or to even slow down.

what do you expect instead?

Re: Draw an iceberg and see how it will float

#54
post #17
post #16

Got a bit frustrated because I couldn't get anything except a flat surface above the water, then read the tweets below and realised that's the entire point: https://threadreaderapp.com/thread/1362557149147058178.html (Many thanks to Elon for making it impossible to read more than the first tweet on x.com without an account...)

Here's a non-flat one: https://imgur.com/a/7KANxOn Very unlikely to occur in nature I guess :-)

That works, but my personal favorite is drawing something like 2 half notes, connected, since a bridge shape seems to maximize the height*width of iceberg visible above the water. There is nothing to stop you from just adding a wide flat plane to the top of your spike either though to add more flair!

Re: Draw an iceberg and see how it will float

#55
post #50

Earlier quoted context omitted.

There isn't necessarily just one. A rectangle-ish form could have 4.

Yes, rectangle would also be degenerate. Basically any configuration where adding an epsilon weight somewhere generates a non-epsilon shift so to speak.

A plus shape "+" has four stable equilibriums which all stable optimums, resistant to weight and self correcting.

Re: Draw an iceberg and see how it will float

#57

Author here. Glad to see this making the rounds again after a few years. Go science! Support your local climate scientist!

This is very cool. I found shapes that do not work well with the simulation: a very wide and narrow shape (like a needle) oscillates wildly and does not seem to stop or to even slow down.

You have possibly unlocked the secret to infinite energy.

Re: Draw an iceberg and see how it will float

#59
post #16

Got a bit frustrated because I couldn't get anything except a flat surface above the water, then read the tweets below and realised that's the entire point: https://threadreaderapp.com/thread/1362557149147058178.html (Many thanks to Elon for making it impossible to read more than the first tweet on x.com without an account...)

https://i.imgur.com/ixBkSsV.png

Re: Draw an iceberg and see how it will float

#60

To the author: Would be interesting to store all the shapes people are creating and let us quickly browse through them. Mostly penises most likely (like any "draw something online" service). (I am also guilty)

Yeah, I don't want to be responsible for user-generated content, and I don't want to collect data on users.
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