How high water pressure do they need to hold that rock up?

How high water pressure do they need to hold that rock up?

None

Clearly photoshopped, dimwit.

It would also depend on the volume of water. If you fired a small jet of water at it with high pressure it'd just cut through it. You'd need a large body of water to be thrown at it to push it.

That's not how physics works

>UNLIMITED...

There's most likely just a metal pole hidden within the jets.

>There's a metal pole in the middle being obscured by the water

...

You would probably need so much that the water would start destroying the rock and anyone who touches the water.

Wow you guys are actually retarded.

almost nearly precisely 5

At least 6 water pressures

3 Indian oceans an hour.

7 water pressures, obviously

how low is the gravity at that location?

Not sure but for water to becoming out of the ground it must be below sea level so that the water can settle under the rock so it's in the high gravity tier.

just need gods will

Its a trick, rock is styrofoam

in that case, you'd need 6 atmospheric water pressures

that's not a rock. it's a boulder

less than the faucet

>pole hidden within the jets.

USING BERNOULLI'S ONE SHOULD FIND HIGH WATER PRESSURE OF THE PIPE AFTER OBTAINING THE VELOCITY OF THE WATER TO PRODUCE THE M DOT OF THE WATER. THE M DOT MUST BE EQUIVALENT TO THE FORCE OF THE ROCK. THIS ASSUMES THAT ALL WATER IS TRANSFERRING ITS MOMENTUM PERFECTLY AND WITHOUT EXPERIENCING DRAG OR GRAVITY.

Is magic!

>rock

meh!

>How high water pressure do they need to hold that rock up?
Hmmm, lets see.

Difficult without dimensions, so lets assume the rock is 10' x 4' x 3'; and assume it's rectangular in section, so thats120 cu ft of rock. And, because it needs to resist erosion by the water, let's assume it's granite. So with granite being about 170 lbs ft^3, it's mass would be about 20,400 lbs, or just over 9 tons (or tonnes for metric fags, they're about the same)

So, if we now assume that the water is acting on a 3' diameter circle, the area of water would be about 7 sq ft. or 1018 sq in

So we know we have a mass of 9 tonnes, so the force required to hold it up against gravity would be 20400 x 9.81 or 200,124 poundals.

Therefore the pressure on the rock by the water would have to be 200124/1018 which gives 196 psi.

The mass of the rock x 1m/s^2 = the Force required to Keep it stable.
With other words if the water travels 1m per second and the mass of water blown against the rock is equal to the mass of the rock it remains stable.
Increasing or decreasing the volocity of the water means less or more water is required per second.

I CAN TELL FROM SOME OF THE PIXELS AND FROM SEEING QUITE A FEW SHOPS IN MY TIME

Wrong, you multiply lbs with N/kg
Convert the lbs to kg first

It's also wrong because P=FA is the wrong fucking formula to use retard

An frican or European rock?

Its a false rock. There are no fine water particles in the pic so the pressure isn't very high. The rock is hollow inside and very light probably filled with helium.

ITT: Americans fuck up their maths... again

>Wrong, you multiply lbs with N/kg
I've worked the whole example using Imperial units.

I can re-run it in metric, if you'd like - I can use either

>because P=FA is the wrong fucking formula to use
how so?

A bucket full every once in a while.

It would pretty high water pressures

about 10 water pressures

I think 6 should be enough but better save than sorry

>I've worked the whole example using Imperial units.
Ah...fuck I see your point. I used metric for acceleration due to gravity.

Rerunning

20400 x 32 or 652,800 poundals

So the water pressure on the rock would have to be 652800/1018 which gives 641 psi

>thanks - I'd thought empirically that the pressure number looked low. And Brit here, not Yank.

You might be right

Or, just put a steel bar to hold it in place in the middle of the water stream where no one can see it.

>steel bar

Wouldn't that be cheating? Cant believe that about anons here on Sup Forums.

6 would only be enough for a smaller rock. 10 would barely be enough for this big one.
Source: I am a rock

Top kek

The picture is upside down

None because its magically attached to that point

7 water pressures

thats pretty high water pressure. i would have said 5 pressures

Oh my god. A decent thread. On 2017's Sup Forums

Then where would the water source be coming from? Probably fiberglass tube with upflowing water in middle, downflowing on periphery

Make that a pipe since that water needs to come from somewhere and you're golden

Nah my man, I use photoshop, I can see it was edited by the pixels

it depends on water
salty water has somewhat higher water pressure
bottled water is more liquidy

Yeah I guess you would need one to send the water upwards, well thought
But the question is about the water pressure from the water leaving the steel tube to keep to rock afloat, which I believe its atleast 40

Fools
Inside of the Fontaine is a Steel stele
Around them is the water Fontaine
That's a Trick for your eyes

meant to reply

Liar

this, things like this just exist in cartoons.

the rock's plastic

cartoons arent that realisticly drawn, idiot

well some of them use 3d graphics
3d graphics obey laws of physics

You are just a rock your opinion doesn't matter thinks would be different if you were THE rock

then explain image, idiot

Your moms piss stream

>seriously believes laws of physics are universal.

You don't know where that rock is, do you ?

you really think the pic is really holding the rock with water? idiot ? me ?

Nope, Thats was a good IQ against the ape how said i was a Liar.

the combined pressure of WWE, Universal Pictures and Walt Disney

Nice dubs, fag

ye, here: (its the image)

Dub dubs, if you please

its there in the op, you can see it yourself, water is holding the rock

idiot

two dubs in a row, blow my nuts idiots, kek knows im riggt

>blow my nuts
Pic related

Are you crazy? You think they'd put a fountain that puts out 10 water pressures in a public park? Do you not realize how incredibly dangerous water is at 10 pressures? My friend got hit by a firehose that was about 6 pressures, damn near took his head off.

I think the rock is hollow, or it's one of those lava rocks with lots of holes in it.

Roger Waters could hold it up. He rocks.

about six

>metal pole

Check your fucking pronouns whiteboi. It could be any kind of pole.

could be a moon rock, those have to be really light so the moon can float way up in space otherwise the moon would fall down to earth

It would go through the rock in time so none.