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## Question

You have a tap that can rotate and has the water going straight downwards out of it(like this) and a cup that is fixed to the bottom of the sink by it's base just out of reach of the water.

With out using any other items how can you fill the cup?

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You have a tap that can rotate and has the water going straight downwards out of it(like this) and a cup that is fixed to the bottom of the sink by it's base just out of reach of the water.

With out using any other items how can you fill the cup?

Simply spin the tap at different speeds...the angular momentum will carry the water outwards...find the speed that allows the water to reach the cup and just keep spinning it at that speed (if the tap doesn't spin 360 degrees, you need to spin it back and forth at that speed).

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Is your cup affixed to the bottom of the sink but on top of the drain? If so, it will plug the drain, and water will fill both the sink and the cup. Or, if it's a bathroom sink, you could pull the little lever that plugs the drain to cause the same effect.

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Simply spin the tap at different speeds...the angular momentum will carry the water outwards...find the speed that allows the water to reach the cup and just keep spinning it at that speed (if the tap doesn't spin 360 degrees, you need to spin it back and forth at that speed).

yes you are correct... i thought this would get a couple of post before someone got it

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Either use your hand to funnel the water into the cup or using Bernoulli's principle simply place your finger in the stream and divert it.

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Ok For added intrigue, the tap now does not move, and your hand counts as an item.

Now the question is what liquid could you get to come out of the tap that would get inside the cup?

Edited by Omni314
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Prop up one corner or side of the house to redirect the stream to the cup.

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Prop up one corner or side of the house to redirect the stream to the cup.

Amazing lateral thinking for the first but as for the second, "proping up the house" isn't a liquid I've ever heard of.

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Amazing lateral thinking for the first but as for the second, "proping up the house" isn't a liquid I've ever heard of.

Propping up the house wouldn't fill the cup though. The cup would be tipped also and hardly any liquid would get in at all...?

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Fill the sink up with water then the cup will also be full.

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If allowed, you could collect the water in your mouth, and then spit it into the cup. Repeat the process until the cup is full.

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Fill the sink up with water then the cup will also be full.

If you can't plug the drain..

Have a very thick liquid pour out, that will fill the sink faster than it drains. Eventually the sink and the cup will fill.

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The type of liquid doesn't matter much, but the amount of pressure behind it at the faucet could make a huge difference. If the pressure "pushes" the liquid out of the faucet faster than it can drain by gravity alone, you'll fill up the sink and cup. Of course, if it was a compressible fluid (which would expand after leaving the faucet), even better!

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You have a tap that can rotate and has the water going straight downwards out of it(like this) and a cup that is fixed to the bottom of the sink by it's base just out of reach of the water.

With out using any other items how can you fill the cup?

fill up the whole sink.

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Prop up one corner or side of the house to redirect the stream to the cup.

How in the world are you going to prop up the house without using additional items? Hehe, interesting thinking though.

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One solution that springs to mind is that the liquid could be something like liquid propane which would turn into a gas at normal room conditions. Propane gas I believe is heaver then air. You could get it to come out of the tap at a rate that the sink would fill with gas. The gas would then fill the cup.

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a few other ideas. first, nothing says that the sink is in a house. if it's in a mobile home you could park on a hill and effectively create the "prop up the house" effect. secondly, what if the sink was in an airplane or space shuttle. all kind of possibilities there (although maybe flying something could be considered a tool). finally, what pressure is the liquid coming out of the faucet? if it's fast enough, the liquid will splash everywhere, including some into the cup, but one heck of a mess to clean up afterward.

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Ok For added intrigue, the tap now does not move, and your hand counts as an item.

Now the question is what liquid could you get to come out of the tap that would get inside the cup?

water of course! What else would it be?

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What about in a very cold atmosphere, as soon as water comes out of the tap it starts becoming ice. This would clog the drain gradually and water would eventually fill the cup.

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What about in a very cold atmosphere, as soon as water comes out of the tap it starts becoming ice. This would clog the drain gradually and water would eventually fill the cup.

What water? Didn't you say it would become ice???

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turn on the faucet and blow the water towards the glass. might get a little lightheaded but it should work eventualy

or

if you dont have a roof just wait for it to rain

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Liquid soap or shampoo might do it.

You could use the Kaye effect to make the liquids jump into the glass if its in the right spot.

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You have a tap that can rotate and has the water going straight downwards out of it(like this) and a cup that is fixed to the bottom of the sink by it's base just out of reach of the water.

With out using any other items how can you fill the cup?

Well this is a bit rude, but seeing as it isnt stated that the cup has to be filled from the tap, or what the cup has to be filled with, simply urinate into the cup.

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Liquid Helium"

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Well this is a bit rude, but seeing as it isnt stated that the cup has to be filled from the tap, or what the cup has to be filled with, simply urinate into the cup.

-mickjc75

Maybe just spitting into the cup will do, however if the goal is to fill it with tap water, my previous answer might make more sense. But what's one to do with a glass fixed to the bottom of a sink. It'd kind of hard to drink from...

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We can blow air from mouth to divert the water into the cup. It will take lot of time and energy but will eventually fill the cup.

or

We can keeping pumping some thin bubble forming liquid slowly. This will form bubbles in the sink. Eventually the bubbles will fill the cup. As bubble above the cup pop the cup will keep filling. After some time it will fill.

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