Bernoulli's Principle

[wolverin648]

duh theirs obviously another string making it move closer to the water!

[MrRubyrubyruby]

mom: Are you doing something?

me: No not really

mom: Come do the dishes

me: ok

[Nettikturbo]

Capillary action.

[Bubleneitor]

COANDA, NOT BERNOUILLI

[WAKeele]

Jesus.

I can't even type that without laughing heavily.

[illuminatusrohith]

bernoullis principle

[MCCCXXXVlI]

Bernoulli's principle is a conspiracy planted in the news by radical, extreme right-wing proponents who want you to believe the World Trade Center plane terrorist attacks WEREN'T the cause of the government. You'd be a fool to think that jet fuel could burn steel--just like you'd be a fool to beleive the Bernoulli principle...

[lalalahaha1234]

@MCCCXXXVlI lol just because you're too dumb to understand the physics behind this doesn't mean its a conspiracy theory..

[sydfan526]

Seems to me that its possible that the ping pong ball has a + (positive) charge, and is attracted to the flowing water because, like earth, it has a - (negative) charge.

So, its not unlike how lightning(+ charge) is attracted to the earth(- charge). When the water started flowing...the ping pong ball was suddenly closer to a negative charge and no longer cared about falling to the floor/earth. It was very happy to fall, sideways, into the water. Sideways gravity lol.

[TheMystery1singer]

@sydfan526 LOL...sideways gravity??

[sydfan526]

@TheMystery1singer Yep - gravity is an effect of electromagnetism, not a universal given. One day science will catch up. Still this particular sideways attraction was caused by low airpressure, not unlike sideways lift if an airplane wing was involved. There could still be an electrical explanation tho as well, as the lowpressure of tornados is just another way for voltage to be transferred from high in the sky to the earth. The water-cloud vortex moves down to meet big pingpongball earth.

[Torishaka]

@sydfan526 Electromagnetism can't be applied to this situation; even if it was charge attraction, the water would quickly dissipate any established charges by acting as an electron sink. Furthermore, gravity and electromagnetism are exclusive principles, they're two different fundamental forces. It's a bit better to think of gravity as bends & compressions of space itself. The constants involved in each force are completely different, as well as their field behaviour towards matter.

[sydfan526]

@Torishaka gravity is relative. constants shmonstants. other planets have different constants, if u will. Its relative to the spin of the planet, the electromagnetic field around the planet. Old school sez constants for gravity.

using yer electron sink idea - think of the static electric charge of the pingpong ball. Those charged electrons want to sink into the water stream, drawing the ball near to the water with them. Happens to be sideways looking to us.

Gravity is a function of EM

[Torishaka]

@sydfan526 Planets differ in their acceleration constants, but not in the fundamental constant. If you consider the Voyager II satellite, the "sling-shot" trajectory they calculated used the gravity constant. Calculations of an electromagnetic nature, on the other hand, use the constant for the Permittivity of Free Space.

[A1n3dr5e1234567890]

It has nothing to do with Bernoulli.

It is just the Coanda effect. Very easy to understand and explains the mechanism on this experiment.

Why people uses Bernoulli effect to explain all kind of lift?

[pasky777]

Of course we can try this at home. there is no danger in it except that off being whacked by your elder brother for destroying his ping ball!!! LOL

[sexiigroup]

that was soo cool!

[zaber314]

SWEET THANKS MAN

[Darkwagz]

HEHEHeh im only in middle school and i dont get it i have to do science fair project on this and can u explain it to m e simply like in a way that a middle schooler would understand

[mybuttstings]

@Darkwagz this is bernoulli's principle

when the water is flowing out of the tap, the pressure is lowered in that water stream area because bernoulli's principle states that when velocity goes up, pressure goes down (vice versa). the velocity increase is the flowing water.

the ping pong ball moves from its area of higher pressure (the still air) to a lower pressure area (the stream of water) because objects in the universe like moving from high to low pressure.

[malaysia8netdamnslow]

im 16 n im still learnin..i hope u guys can teach me more about this and few others..like archimedes,pascal and especially newton...physics is interestin..more fun then biology~~

[nometronome]

the high velocity of the water pulls in the ping pong ball because the ping pong ball moves in to the low pressure area around the water!!!!!!!

[malaysia8netdamnslow]

bernoulli's priciple = low velocity high pressure high velocity low pressure..worked especially on cars and aeroplane~~ others also can~~ haha interesting video~~ good job mate~~

[nometronome]

Okay get an erlenmeyer flask with a tube, and heat it till boil over a hot plate

get a beaker and pour cold water into it.

after the erlenmeyer is boiled, tip the flask over the beaker and the boiling water will pour out.

after a couple seconds, the water will KABOOM up the erlenmeyer flask and you can then hold it upside down without water pouring out

[dy2600]

Not only Bernoullial force held the ball, fluid surface tension of water also exert attraction towards the ball, especially when the tap was turned low which holding the ball at one side. It would be less complicated situation if using blow dryer to blow air instead of liquid.

[lordfatius13]

the area around the water is high pressure. the water has low pressure. in science, high pressure always gives or moves to low pressure. so the high pressure around the ball forces it into the low pressure........ I AM SMART

[jadabingoadf]

No, things go to the lowest energy state. If the air pressure costs less energenitcally then other energetic losses, the object will remain in higher pressure. So the air in our atmosphere stays there instead of floating out to space all at once

[mrsnail445]

aaaargh that's Coanda NOT Bernouilli!! I should now considering that's all ive studied for the past 4 years!! Plus Bernoulli is ONLY valid ALONG a streamline not across streamlines so you cannot invoke the argument you've used.

[grieske]

You are absolutely right. This is Coanda's effect. It has very little to do with Bernouilli. Let's not forget the conditions for Bernouilli's principle. In a potential flow (solenoidal and irrotational), Bernouilli's principle is valid over the entire domain. In a general inviscid flow, Bernouilli's principle is valid along any streamline. For the turbulent flow in the movie, Bernouilli's principle is useless.

[Redring120]

cool

[wachnlearn]

preety shure leave me acomment on my page

[wachnlearn]

tahts not bertonouli's principle thats surface tention

[lonely164shine]

hi, for me, when the water hits the ball it formed a low pressure on the side ( right portion) on the ball; thus, pushing the high pressure on the left portion on the ball to the low pressure...like in an umbrella, when the wind blows the higher pressure which is below the curve thingy part of the umbrella pushes upward to the direction of the low pressure which is on the top part. hehehehe

[bottomline99]

The pressure on the water is atmospheric too and simply has nothing to do with the phenonomon. The phenonomon of this experiment is that the water continues to stick to the underside of the ball on its travels, mainly due to surface tension of water (inside water cant escape). Now, as a result, what happens to the direction of the mass flow of water sticking to the ball?. This is clearly seen at :32 where the direction is changed, by a force, coming from the tension in the string.

[midgetking101]

is that a ping pong ball or a golf ball cause it looks like a golf ball

[phyisfun]

It's a ping pong (table tennis) ball.

[linus7213]

How do you get the ping pong ball to stick to the string?

[phyisfun]

using a masking tape. =)

[lalalahaha1234]

@linus7213 lol read the description

[LTF85199]

you never explained why........ please do an explanation video.

[phyisfun]

Pressure is greater in the stationary fluid (air) than in the moving fluid (water stream). The atmosphere pushes the ball into the region of reduced pressure.

[LTF85199]

ohhh, thank you i understand now, thankyou am a science major, kind of imbarrasing to not figure that out! :-)

[kataro3]

haha well, you're not an english major:)

[saravana733]

@phyisfun Really cool

[saravana733]

@phyisfun Really interesting

[tyronejk]

@phyisfun bs the pressure from the water is much greater than surrounding air pressure. the ball stays there because of surface tension. look up coanda's principle on wikipedia and find the sentence with "misconception" in it.

[R4NG3ROB]

This video helped me with my Science studies! =) Thanks