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/sci/ - Science & Math

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4821492 No.4821492 [Reply] [Original]

If you pull a piece of metal with the same force for an infinite time, will it break ?

>> No.4821498

Yes.

inb4 first year undergrads say no.

>> No.4821507 [DELETED] 

depends.
if you pull a really really thick and strong piece of metal with a force of 1 newton, it'l never break. it just aint enough force. not even close.

>> No.4821518

>>4821507
Actually it will. Infinity is a very, very long time.

>> No.4821530

Constant force means constant accelaration. In infinity we will reach the speed of light.

>> No.4821527

I think if an ant were given 5 trillion ultra years it could bash an opening the size of the grand canyon in the ground with its head

>> No.4821535
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4821535

>>4821527
assuming I don't stroll by and kick dirt all up in that shit.

>> No.4821532

>>4821518
If I have a penny in my pocket for an infinite time, will it become a quarter?

>Actually it will. Infinity is a very, very long time.

>> No.4821545

>>4821532
>I have never studied material sciences

Thanks for letting us know.

>> No.4821561

Disregarding quantum effects, rust or other forms of decay, it depends:

If there is no physical change at the atomic level after pulling for a second, then it will never break.

But if even a single atom is brought to move, then it is entirely possible for the same to continue happening, atom for atom, second for second, until it finally breaks.

In reality though, in an infinite amount of time an infinitely large quantum fluctuation can take place, so breaking a bar of metal is a piece of cake.

>> No.4821564

>>4821561
It's not even QM, it's basic elasticity and thermodynamics.

>> No.4821568

Yep, each time you pull, you destroy some metal bonds.

>> No.4821581

>>4821492
'Break' requirement undefined,
therefore unanswerable.

captcha: defined mesRequ

>> No.4821586

>Metal is malleable and can be drawn into wires.

>There isn't a line where one Force does nothing, and abit higher breaks it, there's a constant range where Forces slowly slowly pull the metal.

It will get drawn out longer and thinner and longer and thinner. Being a real world wire, it will eventually break.

Question though. If I have a supermetal which can get drawn out to the point of being a wire 1 atom wide. What happens? Metallic bonding won't allow it to get that far, no? Will it fail instead?

>> No.4821588

I know variations of force would destroy it.
But constant force ?

>> No.4821589

>>4821545
You've given no indication that you've studied it yourself.

You've provided an answer which is nonsense until you can support it.

The fact that I am ignorant doesn't make you correct. I am sensible enough to recognize your answer as poor.

>> No.4821595
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4821595

Well, that is given that the ant dose not die though.... :P

>> No.4821614

>>4821589
If you actually knew anything about the subject, you'd know what creep is. But you don't.

>> No.4821634

Yeah, it will rust, become weaker then break

>> No.4821669

>>4821614
If knowledge of the subject was already assumed, OP wouldn't have asked.

Please refer me to information about very low stress creep at STP.

>> No.4821701

>>4821669
Creep happens in any condition where a material is stressed due to diffusion having a preferred direction. At low temperatures it has no visible consequences in any reasonable time-frame, but again, infinity is a very long time. Enough to take any tiny imbalance to its extreme consequences.

>> No.4821728

>>4821701
Thank you.

>> No.4821744

CHAIR THREADS = BEST THREADS

>> No.4821777

If the force is zero, it won't break.