Hydraulic problem , Water Main

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The discussion centers on a hydraulic problem involving a 24-inch diameter water main operating at 40 psi, with a small hole drilled in the top. Participants are encouraged to share their calculations and assumptions to determine how high the water will shoot from the hole. The problem hints at the involvement of both hydraulic and ballistic principles, suggesting a need for a comprehensive approach to solving it. Engineers are prompted to demonstrate their work and reasoning clearly. The conversation emphasizes collaboration and knowledge sharing among professionals in the field.
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This is not a homework problem, just a discussion problem between engineers,. I would like to see what anwers others get.

Given: A 24 inch diameter water main is operating at 40 lbs/sq. in.. A small hole is drilled in the top of the water main (not buried).

Find: To what height will the water shoot?


That's all the given info you get, make reasonable assumptions as needed.
 
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mcgiiver said:
This is not a homework problem, just a discussion problem between engineers,. I would like to see what anwers others get.

Given: A 24 inch diameter water main is operating at 40 lbs/sq. in.. A small hole is drilled in the top of the water main (not buried).

Find: To what height will the water shoot?


That's all the given info you get, make reasonable assumptions as needed.

Doesn't matter if it's homework or now, you need to show your own work first. What equations and factors did you use? What answer did you get?
 
russ_watters said:
Hint: it's a surprisingly easy question.

On the surface it seems like a very easy question, it might not be a three term equation.

Is it a hydraulic problem or a ballistic problem. I think both are involved.
 
For simple comparison, I think the same thought process can be followed as a block slides down a hill, - for block down hill, simple starting PE of mgh to final max KE 0.5mv^2 - comparing PE1 to max KE2 would result in finding the work friction did through the process. efficiency is just 100*KE2/PE1. If a mousetrap car travels along a flat surface, a starting PE of 0.5 k th^2 can be measured and maximum velocity of the car can also be measured. If energy efficiency is defined by...

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