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/sci/ - Science & Math

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2021024 No.2021024 [Reply] [Original]

Hello /sci/
I, a humble /b/-tard, came across this in a troll physics thread, and couldn't tell why this wouldn't work. Our best guess was that the valve could not work, but could you possibly explain this a bit more?
Thank you

>> No.2021031

It takes energy to push the balls into the water from below, and this energy is more than what you'd gain from them floating to the surface. So you'd just have a ball stuck at the bottom that doesn't have enough energy/momentum to break the surface tension of the water.

>> No.2021043

fucking magic

>> No.2021051

the seal wouldn't work (obviously)

when you get a seal working perfectly fine, it'd require more energy than the system can produce

>> No.2021064

>>2021031
yeah, you need to apply a huge force to get the ball through the seal.

>> No.2021080

>>2021051
Nothing wrong with the seal. You've got no clue what you're talking about. It doesn't work for other reasons.

>> No.2021085

There is nothing wrong with the seal as valve as such. However the movement of the balls into the water (into the higher pressure) would require the same force that is gained by their movement through the water.

>> No.2021089

Actually this would work. In reverse, as the water pushes the balls down and out the hole. This is somewhat similar to how hydroelectric dams work.

>> No.2021092

>>2021031 It takes energy to push the balls into the water from below, and this energy is more than what you'd gain from them floating to the surface.
>>2021085 However the movement of the balls into the water (into the higher pressure) would require the same force that is gained by their movement through the water.

Okay but how would you know that?

>> No.2021106

>>2021092
A guy calculated it all out once. The difference is forces was extreme, and he was giving extremely generous figures in favor of the system working. The force of the water pushing down on the balls would be something like 100 times as powerful as the upward force of buoyancy and the gravity on the left side combined. I have neither the knowledge or the gumption to reproduce the equations, but it's pretty obvious it would be a fuckton of downward force on the ball entering the system when you consider the weight of all the water above it all pushing down on a surface area as small as one half the ball

>> No.2021165

>>2021089
Only if the balls somehow gained more weight and then were randomly filled with air after they left thewater, otherwise they'd just end up floating, or alternatively, the weight of the ball pushing through the water would not satisfy the weight of the external ball that is not acted on by any force in an upward motion.