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This mechanism shrinks when pulled
53,022 просмотров • 11 месяцев назад •via X (Twitter)
Комментарии: 9

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The two springs start out in series, but when you cut the green string, they are in parallel on the other strings. After the slack is taken up, you have two springs that are stretched farther than they need to be to hold up the weight, and they pull up with more mechanical advantage than they had when in series. It only works because you trade out the energy in the spring tension for more potential energy in the height of the weight. Total potential energy is conserved.

The weight will go up because the springs go from series to parallel.

The auxetic material paradox, first described by Rod Lakes (1987), exhibits negative Poisson's ratio - contracting perpendicular to applied tension. Nature employs similar structures in cell walls and crystalline materials.

Up, very slightly, is my guess, but almost the same height, because the weight gets distributed to the two springs equally instead of the top spring holding the combined weight the other spring and weight.

if you pull my hand, i can do that too

PART 2 IS HERE ! 🗺️ @OrdnanceSurvey (Britain's best map makers) let @markcooperjones and me in their building, and we changed the map of Britain.

I went outside

Pardon my French, but @SenJackReed is a fucking moron. It’s embarrassing that the future of our country is being decided by people like this.
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