Ragebait answers only
It’s a superposition of both states until you make a measurement
Perfectly understood the assignment, 10/10, no notes.
There’d be no cube but yes
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In the first moment of exit, it might look like this though
Stop stealing all my upvotes
You asked a question and they gave an answer. Why wouldn’t they get the upvotes?
I’ve just never had a comment on my post get more upvotes than the post itself.
Am angy
and upset I didn’t think of posting that image in the first place
You can’t place a portal on a moving surface in either game, so neither.
So the cube is just smashed?
It’s a practical answer which is slightly upsetting because I wanted more discourse.
No, cubes cannot be destroyed by crushing. The portal disappears when the surface starts moving and then the cube stops the surface’s descent.
what about the portal on the moon?
It’s unstable and will dissipate on its own when the relative displacement between them will be too great.
Well, everything is moving or not moving, relatively
Skill issue
you can in one specific spot in portal 2!
So now we just need to build this test in there and we are set
Two, if you count… the big one at the end
it doesn’t look like it’s moving though. and considering how many things in portal 2 move when they look stationary or vice versa…
As far as the game engine is concerned, “stationary” is relative to the… other comparatively big thing: the former big thing is moving very quickly around the latter, even if it looks stationary because it has a lower angular velocity
pretty obvious tbh
You’d make a horrible scientist.
It said ragebait answers only ¯\_(ツ)_/¯
If it is a question of real life physics, then B would be correct
Damnit, you are correct, my bad.
Scientists know when to use existing knowledge.
a. while the portal travels down it collects air, increasing air pressure on the other side, meaning once it reaches the cube, the increased air pressure has mad the air solid so the cube cant fly through it.
Now there’s a high quality ragebait answer
Speedy thing goes in, speedy thing comes out.
Cube had no speed going in, therefore no speed going out. The portal speed is irrelevant
But reference frame changes as the cube passes through the portal. The piston would feel resistance as its momentum is transferred to the cube to conserve it.
The cube has a speed of about 30km/s around the sun. You want to measure speed relative to the blue portal, but why that one and not the orange one?
And if the blue portal is at a different angle than the orange portal, then… well, how fast is the milky way traveling through the galaxy relative to the universe?
According to a gravitationally accurate simulation a guy did for Youtube, the correct answer is_
… ah, ragebait answers only. Well, mission accomplished, probably >:3
For anyone who doesn’t know, Optozorax on YouTube has made a finite element analysis simulation of gravity ontop of his portal simulation so we can get an answer to the question. The answer is both. Both happen depending on how fast the portal is moving and the where the second portal is placed in the gravity well.
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Option B. Portals already break a couple of laws of physics and can reverse entropy, but I like to think you should look at the speed of an object relative to the portal.
What if the blue portal is at the bottom of the Marianas Trench?
Speedy thing go in, speedy thing come out. Clearly explained in game.
But I’m this case the cube has no speed, the platform does, so it wouldn’t just suddenly start moving.
It has speed relative to the portal though. Everything has some speed because we’re orbiting the sun, etc
Frame of reference. If a person is hit by a train, from their perspective, they were standing still and the train was moving. But a person in the train can stand up and walk around without difficulty, they can stand on one foot and balance, they can jump up and down and not go flying away; so they are standing still from the trains perspective, it’s everyone and everything outside the train that’s moving.
What happens isn’t a transfer of momentum or energy or velocity; it’s a change in the frame of reference. That can’t happen in real life and breaks a lot of different laws of physics, so people are having trouble wrapping their brain around it.
The portals are a frame of reference. Both the IN and OUT portals have their own, separate frame of reference. The player’s reference doesn’t actually factor into it. When you go through a portal, you are switching from the IN frame of reference, to the OUT frame of reference. And in this situation, the IN frame of reference has you flying toward the portal at whatever speed it’s approaching you.
If anything, it’s rapid exit from the portal would cause an increase in pressure on the top of the cube, causing it to stay in place. The cube still isn’t moving regardless of the velocity relative to the moving platform.
At what point in time would the cube start moving away from the platform it’s sitting on, and what forces act on the cube?
Also shit changes frame of reference all the time irl, and portals a could be thought of as wormholes, which which could theoretically exist IRL.
From the orange portals frame of reference, the cube, and everything else in the world, is rushing toward it. So the cube (as well as the entire world around it) has a velocity relative to the orange portal.
But only the cube goes through the portal, the rest of the world does not come with it. At that point, the frame of reference changes. You can think of it like this: The cube has an velocity of X with respect to reference frame Y; once it leaves the portal, it keeps that velocity X but the reference frame changes from Y to Z. The velocity doesn’t disappear.
The cube does have a non zero speed, it just depends what frame of reference you are measuring it by.
A
It went through the portal at speed, so it should exit the portal at speed. That’s my take.
The piston moves throught the portal and the portal hovers in the air.
B. this is because of Galilean relativity i think maybe
C. The moving portal platform breaks the black platform and the whole thing goes through the portal.
Jokes aside, B.
Devoid of any other external forces, in the cube’s reference frame there’s functionally no difference between it moving towards the portal or the portal moving towards it at a constant acceleration.
Ergo the cube should be pushed out the other side at the same momentum that the system had prior to the collision, and not be simply plopped out as in answer A.
Assuming the black platform does not fit through the orange portal, and the moving panel with the orange portal stops on impact (which is what appears to be true because on the blue portal side we see the surface of the black panel), then the cube is no longer moving relative to the orange portal and therefore has no momentum. Once the cube is entirely on the blue side of the portal it will be affected by the gravity on that side and slide down as if on a ramp (A).
A. Object momentum relative to the world is retained thru portals regardless of the speed of the portal surface or the portal itself. The portal is only transmitting matter from A to B, it does not impart energy of any kind.
If the portals don’t impart energy, you wouldn’t gain speed when you put one directly above another and drop through forever. The higher portal increases your potential energy.
What if the entire room were rigged to a piston, the orange portal were held still and the room forced upwards at speed. Would you see scenario B then?
If so, how do the portals know which to choose? Remember that neither portal is actually stationary: they’re both orbiting the sun at 30km/s, etc.
Its not the portal doing that though. It’s gravity. Your own momentum moves you through the portal while gravity is acting upon you; the portal is nothing but a doorway.
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but it enters the portal at resting, no speed. Its like someone moved a doorway over you. You arent moving at all. So the answer would be A.
If the universe moved around you would other people not perceive you moving? Would that not be indistinguishable to movement?
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But it’s not exerting force, it’s teleporting.
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This is excellent rage bait
