A floating cork always moves to the highest point of the water surface; when a glass is half full, the water surface curves downward at the edges, causing the cork to drift to the rim, but when the glass is filled to the brim, the water surface bulges outward due to surface tension, creating a convex shape where the highest point is in the center, causing the cork to float there naturally.
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The Impossible Floating Cork Bar Bet Revealed! | The Real HustleAdded:
When on holiday, it doesn't get much better than relaxing in the sun with a drink in your hand, except if that drink [music] is free.
The Hustlers are going to show you how to win drinks from your mates by using proposition bets.
The prop bet [music] makes you believe you're onto a sure thing, but of course, the Hustlers always have the edge, and you don't stand a chance.
So, watch and learn. I will have a gin and tonic, please.
Jess is out for a drink in a seaside bar, but she doesn't plan on picking up the tab. Did you study physics at school?
You didn't.
So, you're no good at physics.
Still going to pick you anyway for Okay, cuz this is actually a physics I've got a challenge for you.
Okay, I've got a glass of water.
I've got [music] a cork.
I want you to place the cork in the water and make it settle in the center without touching the edges of the glass. It has to stay in the center without going towards the side of the glass. Think you can do it? Sound simple enough? Uh, it's a challenge.
Okay, okay.
If you can do it, then I'll buy you a drink.
And if you can't do it and I can, will you buy me a drink?
Shake? Yeah? Think it's fair? No helping if you know it, okay? Hands off the table, boys.
>> Can I help? Sure. No, you can't help.
And you can't help.
Between you and me.
>> [music] >> Does it have something to do with the glass's position in the What do you think?
>> [music] >> Woah, baby.
Stay in the center.
Oh.
It comes to the edge. You lose.
Okay, so if I can do it, then you buy me a drink.
No, no, no.
Okay.
I'm going to do I didn't say you couldn't use anything.
I'm just going to top it up a little bit.
So, I see what's happening. I'm just going to top it up a little bit, you know. Yeah, a little bit. How much is a little bit? Come on.
A little bit. Top it up a little bit.
Shh. concentrating here, boys.
It will float off the end.
Okay.
>> [music] >> Go on, Cole. Go on, Cole.
>> [screaming and cheering] >> Take out quick.
These guys have just been hustled [music] by simple science.
A floating cork always moves to the highest point of the water.
When the glass is half full, the highest point is right at the edge because the water surface is slightly curved. But when the glass is full, [music] the water surface actually bulges outwards, meaning the highest point is right in the center. And that's where the cork will float. It works in all drinks, especially free ones.
Can we do it? Yeah, I will. There you go. You can use that now. Don't you? You can do it on all your mates.
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