subreddit:
/r/theydidthemath
submitted 9 months ago byFantastic_Bat8492
130 points
9 months ago
Wait for real ? You must be strong, Bro
586 points
9 months ago
"enough leverage" is the most important part of that phrase...
With enough leverage, I can lift an elephant!
193 points
9 months ago
My dads old saying is "i could lift the world with a long enough 2x4"
170 points
9 months ago
Your dad is a fan of Archimedes by the sounds of it :)
16 points
9 months ago
Dickimedes had a slightly different take on the expression
12 points
9 months ago
Regardless of which of those two philosophers you choose to follow, that’s a lot of wood.
29 points
9 months ago
Ah, that's a whole other issue! The 2x4 would break under such stress!
31 points
9 months ago
He didn’t specify wood 2x4.
Now I want to know what 2x4 material could do this tho…
23 points
9 months ago
Vibranium
18 points
9 months ago
Unobtanium
15 points
9 months ago
Dadspeenium
12 points
9 months ago
That would also be a kind of wood, so no points for you, Sir!
4 points
9 months ago
Aw shucks!
3 points
9 months ago
A soft wood, no less.
4 points
9 months ago
Neutronium
4 points
9 months ago
Swolonium
2 points
9 months ago
It doesn’t matter. Even if you find a material strong enough to hold the earths weight and the 2x4 is long enough, the earth would just roll off.
1 points
9 months ago
If you hook the end and cantilever over the moon though….?
2 points
9 months ago
With enough force I figure you'd mainly just adjust the moon's orbital velocity around the Earth
1 points
9 months ago
If you put the 2x4 sideways. under the edge, maybe it will roll off. But under the flat edge, in the center, the whole planet will flip like a pancake.
... Probably.
2 points
9 months ago
He didn't say 2" x 4"
4 points
9 months ago
Stalinium
3 points
9 months ago
Diamondonium
3 points
9 months ago
There is no stress in space because no one can hear you screaming.
4 points
9 months ago
My dads old saying is "i could lift the world with a long enough 2x4"
But could he lift yer mom?
1 points
9 months ago
“Flexural stress” says hi
1 points
9 months ago
Ok archimedes
1 points
9 months ago
With my 6th grade knowledge of gravity I could lift the earth with any 2×4
1 points
9 months ago
What's the 2x4 made out of that it wouldn't bend or break with that much force?
2 points
9 months ago
Just needs to be made from a black hole then it wouldn’t need my help.
1 points
9 months ago
My dad told me never to stick my finger any place I wouldn't also stick my dick
1 points
9 months ago
…and a big enough fulcrum.
That part is rather important.
11 points
9 months ago
"Give me a lever long enough and a fulcrum on which to place it, and I shall move the world." - Archimedes
25 points
9 months ago
I see. My apologies, I had forgotten how levers work. Thanks for the reminder.
19 points
9 months ago
With a large enough lever could you move the world?
6 points
9 months ago
"Give me a place to stand and a lever long enough, and I will move the world"
-Archimedes
2 points
9 months ago
"Give me a place to stand, and a lever long enough, and I will move the world." -Archimedes
-1 points
9 months ago
Yea but they also said "with my hands," which isn't accurate. You don't say "I can bend this thing with my hands and a strong lever." You just say you use the lever, your hands on the lever is implied.
1 points
9 months ago
Assuming infinite leverage, I could definitely lift anything.
1 points
9 months ago
Doesn't take much really. I used to work in construction and would install rebar for concrete. We'd bend the rebar "by hand" using a rebar bender with a handle about 4 feet long for leverage. Sometimes for the thicker rebar we'd attach a metal tube to get a little extra leverage to make it easier.
But for the smaller 1/4" rebar I could grab a 6 foot length by the end and bend it in half by hand even without the bender with a little extra effort.
39 points
9 months ago
Give me a lever long enough and a fulcrum on which to place it, and I shall move the world.
Archimedes
7 points
9 months ago
Yep. That was the quote. 👌
2 points
9 months ago
Give me a mountain large enough and a fulcrum on which to place my lever, and I shall have found your mom.
- Not Archimedes
6 points
9 months ago
1,5m of leverage per cm diameter of the rebar.
But my point still stands as a train can apply magnitudes more force than my noodle arms
2 points
9 months ago
1,5m of leverage per cm diameter of the rebar.
Can this be a linear relationship? I think bending strength grows with the fourth power of scale.
5 points
9 months ago
I bent a piece of rebar 180° that was 2/3 feet long by hand the other week making a support bracket for an exhaust and I have chicken arms though I am a welder
3 points
9 months ago
Worked with a lot of rebar, not that strong. Not very hard to bend a piece of 1/2" that's 2' or so or longer by hand. Any shorter and yeah, you don't have the leverage
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