Calculating Water's Landing Point From a Hole in a Pool

  • Thread starter Thread starter physhelp90
  • Start date Start date
  • Tags Tags
    Hole Point
AI Thread Summary
The discussion focuses on calculating the distance water will land from a hole in a swimming pool, which is 2.50 m tall and has a 1.00 cm diameter hole located 0.50 m below the top. The user initially applies Torricelli's theorem to find the horizontal velocity of the water, calculating it to be 5.42 m/s. They then determine the time the water is in the air to be approximately 0.20 seconds, leading to a distance of 1.11 meters. There is a suggestion to use Bernoulli's equation for a more accurate solution, emphasizing the need to find the pressure at the hole's level. The conversation also includes a humorous note about visualizing the scenario of water leaking from the pool.
physhelp90
Messages
6
Reaction score
0

Homework Statement


A swimming pool is filled with water. It is 2.50 m tall and 3.00 m in diameter. There is a small 1.00 cm (in diameter) hole in the side of the pool and its 0.50 m below the top. How far from the pool will the water coming out of the hole land?


Homework Equations





The Attempt at a Solution



Here's my attempt using Torricelli's theorem, however I need to use Bernoulli's equation any help is appreciated.

Vx = Sqrt 2g(2.50 - 1.00)
Vx = 5.42 m/s This is the horizontal velocity.

t= sqrt 2h/g = .20 seconds = time water is in air

x = t x Vx

x = 1.11 meters ?
 
Physics news on Phys.org
Well, do you know what Bernoulli's equation is?

If you know that, then so you basically just need to find the pressure at the level where the hole is, then set that equal to dynamic pressure and solve for the velocity value, which should all be in the x direction.
 
I'm really having trouble imagining a swimming pool (2.5 m tall) with a hole and water leaking out of the side of this swimming pool and landing somewhere. It's like watching a movie - you need to suspend your disbelief :mad:

Sorry, don't mind me - please go ahead and solve the problem.
 
Hello
just check the attached doc for the answer method.

tc
mo
 

Attachments

naresh said:
I'm really having trouble imagining a swimming pool (2.5 m tall) with a hole and water leaking out of the side of this swimming pool and landing somewhere. It's like watching a movie - you need to suspend your disbelief :mad:

Sorry, don't mind me - please go ahead and solve the problem.


The pool is standing above ground. Maybe imagine it as just a giant water tank/cylinder?
 
Thread 'Voltmeter readings for this circuit with switches'
TL;DR Summary: I would like to know the voltmeter readings on the two resistors separately in the picture in the following cases , When one of the keys is closed When both of them are opened (Knowing that the battery has negligible internal resistance) My thoughts for the first case , one of them must be 12 volt while the other is 0 The second case we'll I think both voltmeter readings should be 12 volt since they are both parallel to the battery and they involve the key within what the...
Thread 'Trying to understand the logic behind adding vectors with an angle between them'
My initial calculation was to subtract V1 from V2 to show that from the perspective of the second aircraft the first one is -300km/h. So i checked with ChatGPT and it said I cant just subtract them because I have an angle between them. So I dont understand the reasoning of it. Like why should a velocity be dependent on an angle? I was thinking about how it would look like if the planes where parallel to each other, and then how it look like if one is turning away and I dont see it. Since...

Similar threads

Back
Top