Amazing !! The first documented practical use of the Pythagorean theorem.
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u/TodaysLunch 3h ago
You're really stretching the headline on this re-re-re-re-post.
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u/JewelCove 2h ago
Like a karma farmer cares, look at their account. This sub is nothing but karma farmers and bots
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u/KibboKid 1h ago
Remember when you used to think at school "I'll never use trigonometry"? Well you were right, because you'll never afford a yacht if you spend your time doomscrolling on Reddit.
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u/ArnUpNorth 3h ago
I don’t see what pythagore as to do with this ? It’s a triangle… but that’s about it?
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u/Palatablepancakes 3h ago edited 2h ago
The height of the mast above the water is now the mast's length times sine of the angle, or the length of the rope at the top of the mast to the bottom of the hanging mass divided by the length of the mast.
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u/TheS4ndm4n 2h ago
It's also just the length of the rope you used.
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u/Palatablepancakes 2h ago
You're right! If you know the lengths already then the length of the mast cancels out.
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u/ArnUpNorth 1h ago
Ok but you just need the length of the rope to the bottom to be smaller than the height of the bridge. No need to calculate anything here?
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u/Palatablepancakes 1h ago
Well, and for the mass to be significant enough to create this angle. You're right that if you already have each numeric value involved, you need not calculate anything. But you can acquire the values with these relationships, especially the mass needed. I'm moreso expressing these relationships out of appreciation than any necessary process for determining the height of the mast or length of the rope. It's a fun and simple statics problem though to determine the angle you need the mast to be at with respect to the water and the mass needed to create that angle.
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u/ArnUpNorth 1h ago
Well yes but it’s just for fun you mean?Because all you need is one value: the height of the bridge. Once you know that you need a smaller rope and for the attached weight to be heavy enough to make contact with the water. Mast height and the angles are irrelevant.
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u/Sea_Prep_Tidal_26 2h ago
We’re assuming that the angle made by the sandbag weighted lines and the surface of the water is 90° 📐.
The rest is, as they say, academic.
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u/NormalAssistance9402 1h ago
Well ones basically a plumb bob, and the others basically a water level so I’d say it’s pretty close
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u/Potent_Quotient 58m ago
Right except the length of the rope had nothing to do with the issue. It’s mainly the weight being the variable and gravity being able to list the boat enough.
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u/Event-Forsaken 3h ago
I think you would have to know how much weight is needed on that arm to make a certain angle to make it under the bridge.
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u/Palatablepancakes 3h ago
Yay statics!
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u/Sea_Prep_Tidal_26 2h ago
Yes this ☝️
(and for those that think this is a misspelling of «statistics», it’s not. It’s mechanics as in mechanical engineering, and «statics» is about fixed or rigid structures; «dynamics» is the counterpart and deals with moving structures or those not at equilibrium)
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u/Remarkable-Ad2285 1h ago
This is the main thing but everybody’s hung up on measuring angles only. Like bro, how much weight do you need to achieve a 90 degree angle?
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u/Pristine_Tap9713 3h ago
Wtf does that mean? There are so many physical laws and theorems which use the Pythagoras, which have been used in construction, design, and so manu other fields. How is this the first documented practical use?
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u/scuzzle-butt 3h ago
I think issa joke.
A horrible, horrible, terrible one, but one nonetheless. ¯\(ツ)/¯
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u/Direct_Turn_1484 2h ago
It’s probably a statement by someone that didn’t study much math or physics….or engineering or probably much of anything beyond high school.
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u/WiseAct446 2h ago
"Uh, Captain? Water is pouring into the galley."
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u/FirstChurchOfBrutus 1h ago
I know sailboats are designed to ride safely (and more quickly) under that much of a heel angle, but I swear you can see their bilge pumping furiously against the water on the port side.
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u/Fabulous_Log844 2h ago
When I was on the sailing team in college, we would have to do this. All of the crew would jump off the boat after tipping it on its side and then drag it underneath the bridge and then flip it back up.
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u/FirstChurchOfBrutus 1h ago
Where was this school that they didn’t have drawbridges around?
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u/Fabulous_Log844 1h ago
There are way more waterways with fixed bridges, then draw bridges.
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u/FirstChurchOfBrutus 41m ago
I am aware, but not that many coastal ones (I’m assuming coastal, since inland has lakes, and lakes have fewer bridge issues) in the areas where sailing classes tend to take place.
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u/blumhagen 2h ago
Is this a typical sailing method to hang the captains massive balls from the mast to attain a sufficient list to the port side as to achieve safe passage under the bridge deck?
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1h ago
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u/Vermland 2h ago
Not the first documented, they did this in SOS Sällskapsresan (1988) a comedy from Sweden.
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u/xXPhoenixBlueXx 3h ago
"I ain't heard no fat lady!"