Can a Liquid Column Exist Above a Hole When Pressure Drops from 2Patm to Patm?

Click For Summary
SUMMARY

The discussion confirms that a liquid column can exist above a hole when pressure drops from 2Patm to Patm. Specifically, when the volume of the space above the liquid doubles, the pressure can equal Patm while still maintaining a water column above the hole. As the water drains, the pressure above the water decreases below Patm, allowing for a scenario where the combined pressure from the water column and the space above can equal Patm at a certain height. This phenomenon illustrates the relationship between pressure, volume, and liquid columns in fluid dynamics.

PREREQUISITES
  • Understanding of fluid dynamics principles
  • Knowledge of atmospheric pressure (Patm) and gauge pressure
  • Familiarity with the concept of hydrostatic pressure
  • Basic grasp of pressure-volume relationships in gases and liquids
NEXT STEPS
  • Study the principles of hydrostatics and fluid statics
  • Explore the ideal gas law and its implications on pressure changes
  • Learn about the effects of pressure changes on liquid columns in various scenarios
  • Investigate real-world applications of pressure dynamics in engineering systems
USEFUL FOR

Students and professionals in physics, engineering, and fluid mechanics who are interested in understanding the behavior of liquids under varying pressure conditions.

zorro
Messages
1,378
Reaction score
0

Homework Statement


This question is a product of my own mind-

Refer Figure.
Suppose the value of P= 2Patm, can 2Patm fall to Patm before the liquid levels with the hole-level? In other words, can there be a liquid column above the hole?
 

Attachments

  • Untitled.jpg
    Untitled.jpg
    3 KB · Views: 396
Physics news on Phys.org
Abdul Quadeer said:

Homework Statement


This question is a product of my own mind-

Refer Figure.
Suppose the value of P= 2Patm, can 2Patm fall to Patm before the liquid levels with the hole-level? In other words, can there be a liquid column above the hole?

It is possible. When the volume of the space above the liquid doubles, pressure becomes Patm.. Still there is a water column above the hole. As the water drains, pressure above the water decreases below Patm. At one level above the hole, the sum of the pressure due to the water level above the hole and pressure in the space above the water may become equal to Patm.
 
Thanks!
 

Similar threads

Diameter of hole vs time to submerge
  • · Replies 8 ·
Replies
8
Views
4K
What are the variables that affect the pressure of a gas in a capillary tube?
  • · Replies 3 ·
Replies
3
Views
2K
Question about water weight and pressure
  • · Replies 4 ·
Replies
4
Views
7K
What Is the Largest Pressure Measurable by a 70cm Water Column Manometer?
  • · Replies 8 ·
Replies
8
Views
3K
Pressure exerted by water on Sphere partially exposed at end
  • · Replies 10 ·
Replies
10
Views
4K
What Is the Period of Oscillations in a U-Tube with Varying Radii?
  • · Replies 12 ·
Replies
12
Views
7K
Is the mass of Liquid N2 and its rate of mass loss related?
  • · Replies 10 ·
Replies
10
Views
2K
Pressure just before the exit hole in a draining tank
  • · Replies 7 ·
Replies
7
Views
2K
Need help with a pressure/projectile motion problem
  • · Replies 1 ·
Replies
1
Views
10K
U-Tube (Pv=nRT, Pascals) Problem
  • · Replies 15 ·
Replies
15
Views
2K