this post was submitted on 11 Feb 2025
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It can look dumb, but I always had this question as a kid, what physical principles would prevent this?

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[โ€“] [email protected] 83 points 1 week ago (2 children)

The problem lies in what "unstretchable" and "unbendable" means. Its always molecules and your push takes time to reach the other end. You think its instantaneous because you never held such a long stick. The push signal is slower than the light

[โ€“] [email protected] 67 points 1 week ago (3 children)

You think its instantaneous because you never held such a long stick.

Speak for yourself! ๐Ÿ˜

[โ€“] [email protected] 7 points 1 week ago (3 children)
[โ€“] [email protected] 10 points 1 week ago

Basically the speed of sound in that material

[โ€“] [email protected] 2 points 1 week ago

It depends on the person who's holding it and pushing it. For me it takes at least three minutes!

[โ€“] [email protected] 1 points 1 week ago

Probably wiggly wiggly

[โ€“] [email protected] 3 points 1 week ago

Tbh I thought someone would make that joke when i wrote it lol

[โ€“] [email protected] 1 points 1 week ago

Alas, the longer the stick is, the floppier it gets.

[โ€“] [email protected] 5 points 1 week ago

I would liken it to a long freight train starting to move. Once the front starts moving, it will still be a minute before the back starts moving. The space between the train couplings is like the spring effect between atoms, or something.