So this portal physics riddle is frequently posted on /v/, and

>>384882508
if the platform the cube is on is not moving then A. should occur

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Portals require an infinite amount of energy to be created, we know this as there are various ways to create a perpetual motion machine with them which can only be possible if they already take an infinite amount of energy to make.
Since we know Energy = Infinity, let's do a couple of equations.
E = mc^2
As we know c = the speed of light or 299 792 458 m / s, and 299 792 458^2 is 8.9875518e+16, and that Energy is Infinity, the equation becomes
Infinity = m8.9875518e+16
The only way for the equation to match up with one another is if Mass is also Infinity.
Therefore, a portal has infinite mass.
F = ma
We already know m = Infinity so the equation becomes
F = Infinity x a
Any form of acceleration would require an infinite amount of force.
The portal cannot have 0 mass, as energy for massless objects can have the equation of
E = hf
Or Energy equals Planks Constant x Frequency, as Planks Constant is a finite number, frequency must be infinite.
The equation for energy can also be
E = hc / wavelength, as Planks Constant and Speed of Light are finite, wavelength must be 0.
But Light is equal to wavelength x frequency, but 0 x Infinity = 0, making light move at 0 speed if portals were massless.
Ergo, the answer is Ѭ, the piston is unable to move as it would take an infinite amount of force to move the portal situated upon it.

>>384882583
Portal developer says B if anything.

>>384882737
>Ѭ
whoa

>>384882508

only morons think B is correct

the actual games just have those physics because they are more fun

>>384883186
>Afags
>Bfags are so STUPID. Modern education, everyone. It is OBVIOUSLY A.

>Bfags
>It is B because of X and Y, Afags fail to realize Z

>>384882508
obviously A

>>384882737
wouldn't this destroy the earth because the earth is moving around the sun and rotating. Not to mention the solar system rotating around the galaxy and everything else moving?

And portals can move relative to each other. In the ending of portal 2 the MC shoots the portal at the moon. The moon is orbiting around the earth and also rotating. So the portals would half to of moved relative to each other.

>>384885329
>implying the moon is moving when the portal is on it

>>384882737
but if it could move, it would be A

>>384885669
>but if 1 + 1 didn't equal 2, it would be 1

>>384885610
If the portal really causes a stop in all relative motion, then a it would just rip off a tiny chunk of the moon the size of the portal and the moon itself would just continue on it's merry way. That clearly didn't happen so we must assume that portal takes place in a universe that doesn't abide by special relativity.

Meaning to answer this question we would have to apply the physics of the game and not the physics of real life because they are two separate universes

>>384882508
Cube will vaporate