It's finally over Yea Forums, here is the real answer:

5 + (-4) = 1

This is fucking stupid. It's obviously gonna "come out" of the portal at piston speed, then slide off. Since the cube never had momentum it won't shoot out, because nothing moved it.
It should look more like materialization.

Didn’t someone actually email a dev that worked on the game and they said that A was the right choice? Why are we still having this discussion?

Nice old IP samefag.

I’m not him, but alright dude.

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>A-theists will deny this and attack minutephysics himself
Dunning-kruger were right.

>It doesn't work like B in the game, but you can just ignore that if you want.
He is literally just bullshitting and says as much.

>People too dumb to realize that there is an option C, which is the correct one

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He's considering the physics of the portals. In the game, they're limited by the engine. The custom leveled in Portal 2 that he showed glitches because Source and Havok don't function like real life.

The moment you say the portals move you're already bullshitting because the game says they don't

>like real life.
right, not like real portals.

Let's say a cube falls into a portal. Other portal moves forward at twice the speed. What is cube speed after exiting the portal?

>when the "science" youtubes gets it wrong

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The scale will tip to the left.

not WHO, specifically?

The scale will tip to the right

Seriously, that one scene fucked it all up
Also, technically shooting a portal onto the moon, but at least that could be discounted as rule of cool and had the attempted explanation with the moon dust

An user sent a mail to gabe who forwarded it to the dev that was responsible for the portal physics. The dude said it was A.

>hurr durr portals are not real

Fuck off

Gabe misunderstood the question and awnsered like if b implying that cube would continue to accilirate at rate of g in the direction wich exit portal facing.

The piston with the orange portal will smash on the bottom one, thus, the bottom piston will temporary exert the same force upwards. A small amount of that will shoot up the cube, depending on the surface area the cube takes, but not as much as to be (B) since it implies that the cube gets shot as fast as the top piston (when it's losing ~90% of force, number would change depending on the amount of space the cube takes on the piston), but not (A) either, since some force will shoot the Cube.
Answer is, OP picture is a shitpost and should not be taken seriously

This is why I hated taking goddamn physics

Assuming the volumes of water are equal, the only force acting is the pull of the ping pong ball on the scale due to its buoyancy.

PORTALS CANNOT BE PUT ON OBJECTS THAT ARE MOVING IN THE SAME PLANE OF DIRECTION
WALLS THAT ARE MOVING FORWARD AND BACKWARDS BUT ARE FACING FORWARD AND BACKWARDS CANNOT HAVE PORTALS ON THEM
WALLS THAT ARE FACING FORWARD AND BACKWARDS BUT ARE MOVING UP AND DOWN CAN HAVE PORTALS ON THEM
THIS IS ALL IN THE GAMES PHYSICS

SOURCES:
PORTAL 1: CHAPTER 6
PORTAL 2: CHAPTER 5

Please be b8

I don't think so, unless the pingpong ball is filled with a lighter than air gas. It would just be the equivalent of having that much less water in it
Exaggerate the setup and you get
>Two massively large balloons with a small layer of water sandwiched between them. The two are connected by an inner string.
The balloon wouldn't float, because there's no actual net upward force

It's true though. It's like trying to make sense of the escher staircase, it simply cannot exist

It appears at moving portal's speed, then continues falling at the speed it had before entering the portal. The portal exerts no force to it.

/thread
only retards would continue arguing past this post.

It would be A. Why would the velocity of the portal be added to the cube? By what means would the portal accelerate the cube after displacement? Isn't the only function of a portal displacement of an object that meets its 2D plane?

The left tray supports more weight - container, water and the ping pong ball, whereas the right one only the container and water.

You're not thinking about the volume right. The only difference in forces on the scale is which of the balls is tethered to it.

It's been over for a while faggot. This is canon.

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If he chooses B he's a fucking moron, not even going to watch the video.

the steel ball will pull it down unless you've done something fucky like make it hollow

are the volumes of water supposed to be equal? if so, then the left one weighs more because it has a ping pong ball in it

It was never a paradox for anyone who actually played the game.

>optical illusions are now physics
What retard shit is this?

correct, even though the ball is being pushed upwards by the water, it is still part of the total weight on the scale

Whoever the fuck he’s referring to. user wasn’t exactly specific in his post calling me a samefag.

Because relativity. If you were floating in space and the orange portal moved toward you you literally wouldn't be able to distinguish whether it's flying at you or you are flying at it.

>thus, the bottom piston will temporary exert the same force upwards.
This is the part I don't understand. Why would that happen? The portal is more like a hula hoop. If you pass a hula hoop around a pole, does the pole jump upwards?
What I can see is gravity affecting the cube as soon as enough mass is on the other side, which might make it slide to the right in the origin point all the way to the edge of the portal and then finish sliding off the slope.

>some noname nobody replies in gaben's name

fuck this shit I'm just gonna test it irl right now. brb

>not knowing the difference between force and velocity
lmao

Afags literally btfo, there is no fucking way it's A, because static cube won't pass throught portal or it's B

It cannot be likened to a hula hoop, as such an item has both its "entrance" and "exit" always moving at the same speed, yet one of the portals is moving while the other remains stationary.
Imagine staring into the blue portal as the experiment happens, you would see a cube flying at you. Why would the cube stop flying at you when it exits the portal?

Game and story segragation done to save up on resources. Moon is moving relative to earth and portal opened thete just fine.
It could be that portal gun conbects two absolutly identical universes.
Does it lose speed instanteniusly.
Read what he said. He didn't even comprihed the question.
Entrance and exit of hola hoop cant move relativly to each other.

>Moon is moving relative to earth and portal opened thete just fine.
That was pre-empted with the moon dust explanation in 2. Which is also dumb and makes no sense, but maybe something in moon dust allows portals placed in it to maintain relative distance/speed with their counterparts

The confusing point is that space moves relative to itself, so the entirety of space will have the speed of whatever the portal is moving at.
Portals can produce infinite energy if they can indeed move.

>The portal is more like a hula hoop.
Not when one end is moving with respect to the other you fucking retard. Show me a hula hoop that does that.

>Does it lose speed instanteniusly.
"yes". The piston-speed stage is an illusion, because it's actually the portal moving, while the object itself still hasn't gained momentum.
Same answer, it's not actually moving. It's the portal that moves towards it, or you could even say it's your universe moving towards it. The momentum is actually on the pistons, so the moment of momentum transfer happens when the pistons touch.
I'll admit the vibration caused by the pistons hitting could possibly make the cube move a little.
I was just taking the easy way and using a little analogy holy shit. Obviously a fucking space-time abomination is not 100% equal to a toroidal piece of plastic.

>Obviously a fucking space-time abomination is not 100% equal to a toroidal piece of plastic.
Yes, and that's why your analogy was retarded. What happens when you drop a hula hoop on something is NOT the same as what happens when you drop one end of a portal on something. That's exactly the point.

I wouldn't really call it a paradox.
It's more like a conundrum.

>Same answer, it's not actually moving. It's the portal that moves towards it, or you could even say it's your universe moving towards it.
Why does it matter what is actually moving? If a big rock was set on a path to collide with you in an otherwise completely empty void, how would you tell if it is you that is moving toward it or the rock that is flying at you? And regardless of which is the case the result will be the same.

Retarded argument. Portals can generate energy without moving. Just by putting one portal under the other you get infinite potential energy from gravity force. There was some in-game explanation for about portals being powered by some power source inside portal gun.

Even when the portals are moving in tandem, Yea Forums is too retarded to understand what would happen.

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THE MOON ISNT MOVING TOWARDS THE EARTH YOU DUMB FAGGOT
THE MOON IS MOVING SIDE TO SIDE
MY POINT LITERALLY STILL STANDS GET FUCKED

it comes out at 13 m/s

Okay, listen. Imagine if the portal got halfway down the cube and suddenly reversed direction. Would the cube have begun to shoot out and then reverse direction?

Therefore portals CAN move relative to each other.
Earth and moon are not points and have volume.
Portals can create infinite energy by placing one under another. No movement needed.
Force that acted upon portal surface would also act upon cube.

the ping pong ball is pulling upwards and the steel ball is denser, so assuming the same amount of water is used the scale would tip towards the steel ball

Assuming the change of direction is instantaneous and without loss of speed, the cube would not move due to the forces of the cube trying to move out of both portals going into the opposite direction and canceling eachother out.

>more weight
>ping pong ball

This entire thread is pointless.

Yes but the movement or non-movement of the portal itself doesn't matter as it doesn't impart a force to anything.

2.7 grams

>but that's okay! we don't have to agree with the game designers!
The whole puzzle comes from the game, although that's disingenuous since the game designers said Portals can't exist on moving surfaces. They programmed it as A, which minute physics admits.

2.7 grams pulling upwards

You're correct that it would tip towards the steel ball, but you're wrong about the ping pong ball pulling it up.

Jesus no one ever brings this up sigh

So if the portal is moving coming at you at 100mph, as your looking into it before you enter you can see the other side which is basically a WHOLE UNIVERSE coming at you at that speed. Yet you would be standing still still. But a person on the other end looking would see you an Your universe coming at them at that speed but they would be standing still...

So the only way this works is if the two ends were not the same universe

Portals are dimensional hopping devices

@468457182
kys faggot

An ice cube will add weight just like the ping pong ball

>trying to make sense out of something that takes place in its own universe and laws

its already been confirmed twice that A is the outcome in the portal universe, trying to argue over how it'd work in our universe is a moot point until we can actually make portals. it'd like arguing over how the toxic sludge from TMNT would affect us in our world, it's just impossible to know.

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why wouldn't the ping pong ball provide some level of upward force?

so the question is does the upward force of the ping pong ball that wants to break the surface outweigh the weight of the ping pong ball?

no because it is not enough upward force to completely leave the water. If it were a helium balloon it would definitely outweigh the weight of the balloon