Calculating Water Pressure and Displacement in a Vertical Pipe

[alibaba2]

hi...
i have this question:
what would be the force in kilograms to press the entire volume of water from the container up the pipe at 30ft. ( some of the water will remain in the pipe of course).

see image:

img374.imageshack.us/my.php?image=graphic1qh8.jpg

BIG thank you

 

[alibaba2]

anybody??

anybody?

 

[tiny-tim]

Hi alibaba2!

(I assume the pipe is open at the top, so the water just spills out and disappears.)

You need to calculate the force needed to lift a 2 ft cube of water to the top of a 30 foot pipe.

So the formula you should use is … ?

 

[alibaba2]

help

no idea whatsoever...i had the formula written down,but i can't access my notes from my current location...

any help tim?

10x

 

[tiny-tim]

Well, what principle do you think would help … energy? … momentum? … work? … something else?

Hint: how much force is needed to raise a one-cubic-foot bucket of water a height of one foot? ​