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2023-11: Warosu is now out of extended maintenance.

/sci/ - Science & Math

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File: 124 KB, 500x654, awesome.jpg [View same] [iqdb] [saucenao] [google]
3406624 No.3406624 [Reply] [Original]

Go on...

>> No.3406630
File: 61 KB, 640x427, phd.jpg [View same] [iqdb] [saucenao] [google]
3406630

>> No.3406629

>>3406624
glue

/thread

>> No.3406637

Fucking magnets, how do they work?

>> No.3406721

inb4 center of gravity is within the boundary of the table
inb4 not accounting for other variables which will make the coin arrangement impossible without the use of something to hold them together

>> No.3406733

>>3406624
not physicsfag, but i'm quite sure this is impossible without glue or magnets

>> No.3406777

>>3406733
You clearly don't know anything about physics if you can't comprehend centre-weighting.

>> No.3406783

>>3406733
center of mass

>> No.3407530

Mathematical Methods in the Physical Sciences?

>> No.3407543
File: 15 KB, 500x375, 112.jpg [View same] [iqdb] [saucenao] [google]
3407543

Neat trick. I think I'll hang around for a bit.

>> No.3407557

>>3407543
God.
Yes my child.
I would like to file a bug report.

>> No.3407561

>>3407543
i was just about to post this. this one is legit, OP's pic must have used glue.

>> No.3407566
File: 84 KB, 1000x907, 573swz17o.jpg [View same] [iqdb] [saucenao] [google]
3407566

>>3407557

OH MAN I HAVE NOT HEARD THAT JOKE BEFORE THAT IS SO FUNNY

Fucking /sci/

l2 center-of-mass

>> No.3407570

>>3407566

[awkward_lie]
Thanks man ... I was just looking for that image.
[\awkward_lie]

>> No.3407572

I'd need a shot from the bottom, or directly from the side to say if OP's picture is legit or not.

>> No.3407576

>>3407566
>center of mass
>implying that the image makes any sense even if you consider the center of mass

Fucking torque.

>> No.3407583
File: 157 KB, 657x348, Replicator.jpg [View same] [iqdb] [saucenao] [google]
3407583

>>3406624
OH SH-

>> No.3407597

fucking gyroscopes man

>> No.3407681

>>3407543
this isn't that confusing when you realize the major force of gravity is in the handle and the force is being transmitted onto the part of the ruler on the table. it just is putting immense stress on the ruler

>> No.3407684

>>3407543
>mfw everyone is impressed and no one tries it at home

>> No.3407692

>>3407576
The torque balances. Again, learn to center of mass.

>> No.3407711

>>3407692
>From the point of the ruler at the very edge of the table
>large clockwise moment from the hammer via the string
>nothing in the system provides a counterclockwise moment
>the torques balance

no

>> No.3407759

if you don't know fucking basic mechanics why would you people even bother trying to comprehend this image.

>> No.3407762

>>3407711
You fail classical physics. Really, draw a force diagram. Note that the head of the hammer is on the opposite side of the ruler's contact point as the handle is.

>> No.3407769

>mfw idiots are actually going try this out

>> No.3407790

>>3406629
this
you are now aware that the bottom layer of dimes has nothing to rest on.

>> No.3407795

>>3407790
It's resting on other dimes. Are you even looking at the picture? They overlap.

>> No.3407799

>>3407790
they're resting on other coins which are resting on other ones below them and so on

>> No.3407804

>>3407799
But nothing's resting on the topmost layer of coins.

>> No.3407810

>>3407795
my bad, had just barely zoomed in on it. looks more plausible now.

>> No.3407816

Gravity + friction.

>> No.3407819

>>3407762
Irrevelant. It does not apply a counterclockwise moment.

>> No.3407820

It would be easier to stack them originally using another support, then removing the support.

>> No.3407827

>>3407804
Force of gravity

>> No.3407838

>>3407819
> It does not apply a counterclockwise moment.
You've misunderstood force diagrams then.

Treat the problem however you want, the answer doesn't change. You can do this. It works. One key factor is that the center of gravity is *below* the contact point.

>> No.3407848

>>3407838
>One key factor is that the center of gravity is *below* the contact point.

You mean to the left right?

>> No.3407850

>>3407848
I'm referring to the hammer+ruler.

For the dimes, the center of gravity is still on the table (not past the edge).

>> No.3407852

This looks like mostly friction holding it together, and the gravity just being like "lol fuck you"

>> No.3407864
File: 87 KB, 400x279, SOON.jpg [View same] [iqdb] [saucenao] [google]
3407864

>mfw I am succeeding in building this

>> No.3407872

>>3407852
There is no frictional force, only gravitational.

>> No.3407867

>>3406624

GuaranteedReplies.png

>> No.3407880

>>3407872
tell that to the stacked coins

>> No.3407911

Gravity, so what?

>> No.3407951

>yfw they're all magnetized

>> No.3408148

>>3407872
>No friction

Ok

>> No.3408160

This is possible without glue or magnets.

You must first assemble the stacked coin structure on a smooth surface, and then slowly slide it to the position shown in op's image.

>> No.3408174

>>3407561
>i was just about to post this. this one is legit

No, it's not.

>> No.3408252

>>3408174
I've done it, fag.

>> No.3408270

>>3408252
No, you haven't.

>> No.3408585
File: 1.08 MB, 1023x767, 20110717230058.png [View same] [iqdb] [saucenao] [google]
3408585

>>3408270
You sure about that?

>> No.3408612

>>3408270

[] Not told
[] Told
[] Fucking told
[x] No country for told men

>> No.3408646

>>3408585
I demand more pics. Did you do this just now or is this an old photo?

>> No.3408674

>>3408585
>photo
>PNG
What the hell are you doing

>> No.3408692
File: 12 KB, 250x250, 1304831235219.jpg [View same] [iqdb] [saucenao] [google]
3408692

>>3408646
>thinks it's fake
http://www.youtube.com/watch?v=pXYlOC6u9w8

>> No.3408738

>>3408585
Your picture and the one that came before it doesn't have the ruler as curved as the one in the video.

>> No.3408748

>>3408738
Depends on how rigid the ruler is.
>>3408646
I just did it, I could do it again if you really want but I'm working on the coins thing.

>> No.3408752
File: 9 KB, 210x251, 1281734630005.jpg [View same] [iqdb] [saucenao] [google]
3408752

>>3408738
>not identical
>must be fake

>> No.3408754

>>3408738
If !3408738.isTroll():
    self.respond(3408738, "He has a higher quality ruler")
else:
    self.respond(3408738, "WTF YOU GOD DAMN RETARD FAG, GO \
    TROLL /b OR SOME SHIT LIKE THAT. STOP WASTING /sci's \
    PRECIOUS, HIGH INTELLIGENCE TIME.")

>> No.3408758

>>3408748
>I just did it, I could do it again if you really want but I'm working on the coins thing.
What's with the suspicious blur in the photo? Why can't you take a better shot? Blurring is an easy way to cover up shooping.

>> No.3408785

>>3408758
Took with phone. I took a few pictures and the others were generally worse. Also I think I might succeed with the coins.

>> No.3408933

FFUFUUFKUCKUCKUCURUFUFUCK
I seriously just had the coins in place like the OP. I knocked half of it into pieces immediately after. No one will believe these until I get it repaired in about an hour.
Once again, FUAKUFIKCJKUFKCKCKCKUFUFU

>> No.3408957
File: 6 KB, 150x150, gay-duo-live-150x150.jpg [View same] [iqdb] [saucenao] [google]
3408957

>>3406624
You guys realize you could just do a simple mass/weight calculation to see if it is plausible.

>sci, how of the useless speculators.

>> No.3409009
File: 739 KB, 2048x1536, 20110718010125.jpg [View same] [iqdb] [saucenao] [google]
3409009

This is about as close as I got /sci/. I think that if I am more careful I might be able to make it exactly like the OP. I was taking more quarters off of this and it collapsed.

>> No.3409017
File: 573 KB, 2048x1536, 20110718010605.jpg [View same] [iqdb] [saucenao] [google]
3409017

>>3409009
Pic related.

>> No.3409021
File: 485 KB, 2048x1536, 20110718005809.jpg [View same] [iqdb] [saucenao] [google]
3409021

The bottom.

>> No.3409022

>>3409009
^
The only REAL scientist to ever grace /sci/ with his presence.

>> No.3409034

pro tip:
put a book underneath when constructing it. then, when it's fully formed and stable enough to support itself, remove book and take pic

>> No.3409334
File: 728 KB, 2048x1536, 20110718023436.jpg [View same] [iqdb] [saucenao] [google]
3409334

New and improved! I could not get it to hold up in the form presented in the OP. This is as close as I could get it to be and still hold.

>> No.3409385
File: 837 KB, 1024x3072, 20110718022335.jpg [View same] [iqdb] [saucenao] [google]
3409385

A collaboration of my most successful attempt.

>> No.3409397
File: 7 KB, 200x173, inigo.jpg [View same] [iqdb] [saucenao] [google]
3409397

>>3409385
Also, I don't think "collaboration" is the correct word...

>> No.3409699

>>3409397
nonetheless, you are great.

>> No.3410415

>>3409385
>Beats by Dre
WHY.jpg

>> No.3411087

>>3410415
They were free. I should have tried to get them returned for cash but I never did.

>> No.3411121

The hammer and ruler one is legit.

You can do it your own goddamn self with a tiny bit of effort.

>> No.3412983
File: 30 KB, 550x395, grand-canyon-skywalk-3.jpg [View same] [iqdb] [saucenao] [google]
3412983

I find it incredible that a thread like this exists and nobody mentions the Skywalk
http://www.youtube.com/watch?v=BvzlZuWrJNw