Derivation of the change of air pressure with height

AI Thread Summary
The discussion centers on the derivation of air pressure changes with height, specifically questioning why the weight of air above a slab is not included in the calculations. It is clarified that only forces acting directly on the slab should be considered, which include the pressure from above, pressure from below, and the weight of the slab itself. The weight of the air above does not exert a force on the slab; instead, its effects are captured in the pressure above. The conversation emphasizes that pressure results from molecular collisions, and the contact force (pressure) accounts for the weight of the air above. Ultimately, the derivation remains valid as it correctly reflects the forces acting on the slab without needing to include the weight of the air above.
  • #51
Thanks everyone for giving their precious time and intellect to me. I’m really grateful to everyone. I mean it.
 
  • Like
Likes Delta2, Chestermiller and Dale

Similar threads

"Air Pressure" is not "the weight of the air above you"
Replies
27
Views
4K
I Filling a rigid tire from a pressure regulated compressed air line
2
Replies
67
Views
5K
I Modeling a Bottle Rocket: Analyzing the Maximum Altitude
Replies
4
Views
5K
What is the approximate pressure at the center of a cool Earth with no gravity?
Replies
1
Views
2K
Explaining Pressure & Depth Relationships in Fluids Using Halliday & Resnick
Replies
4
Views
2K
An odd question regarding Bernoulli's Principle
Replies
5
Views
3K
Chemistry What is "gauge pressure" and how does a manometer work?
Replies
1
Views
2K
Pressure on a sample of fluid (at rest)
Replies
30
Views
2K
B What is the pressure acting on the air?
Replies
10
Views
1K
Pressure Causes: Weight vs Molecules Motion
Replies
7
Views
4K

Hot Threads

Recent Insights

Back
Top