All Questions
26
questions
1
vote
1
answer
49
views
Finding Exterior Confining Pressure from Interior Pressure Point for a Solid Disk
Essentially, I've been wrapping the pictured object tightly with string to exert a confinement pressure on its exterior. It's been difficult however to make a good estimate of how much pressure is ...
5
votes
2
answers
256
views
Help me understand extreme pressure
So we have the tragedy of the submersible being lost near the Titanic site.
I am trying to understand the pressure the vessel was under. I have heard the "$1$ atmosphere for every $10$ meters&...
- 153
0
votes
2
answers
152
views
Why are pressure differences so deadly?
The question comes from this video https://www.youtube.com/watch?v=2w-U5wJafhg which details an incident that occurred at the Byford Dolphin Rig https://en.wikipedia.org/wiki/Byford_Dolphin
A group of ...
- 105
0
votes
1
answer
126
views
How does pressure act evenly in all directions in interactions between solids?
Pressure is a scalar quantity, and I think I understand this in the context of pressures exerted by gases and liquids. However, I struggle to understand this in the context of solids. If I use a ...
- 1
0
votes
4
answers
136
views
Why does the piston 2 not accelerate faster than piston 1 when piston 1 is pushed?
Let say there are two pistons, $p_1$ and $p_2$ such that $p1$ has lesser area at its base and $p_2$ has larger area at its base. Then, by pascals law(pressure remains same everywhere on surface ...
- 91
8
votes
1
answer
882
views
Why doesn't a blunt-tip nail crack the wood?
I came across this video, which shows you how to prevent the wood from cracking up at the ends while hammering a nail into it. The proposed solution is to make the nail tip blunt using a plier. This ...
- 12.5k
2
votes
2
answers
321
views
Air Pressure Acting Below Object
Consider an object resting on a surface. If I had to find the net force on the object, I would write an equation as follows: weight = normal force.
But what about the air pressure that's acting on the ...
- 251
0
votes
1
answer
41
views
Why does the red arrow generate smoke when flying at high speed on a moon rocket?
Why does the red arrow generate smoke when flying at high speed on a moon rocket? I think it is because of the structure, the air in this location has expanded, so the air in this location has ...
- 2,040
0
votes
1
answer
54
views
Understanding the relationship between $P=F/A$ in brain ventricles
Humans have a hollow space (see the colored part in the diagram below) inside our brain where cerebrospinal fluid is produced and circulated.
A disease exists called "normal pressure hydrocephalus" ...
- 121
1
vote
1
answer
542
views
Does water pressure have any effect on the size of a permanent magnet's magnetic field?
If a permanent magnet is dropped into a deep body of fresh water such as Lake Superior, as it descends down, the rising water pressure should continually reduce the size of the magnetic field ...
user217618
0
votes
1
answer
691
views
Is it momentum/force or pressure that determines the damage of an impact?
So a tiny object and a huge object that have the same mass and velocity strike a surface. Because they have the same mass and velocity, they would have the same momentum and will deliver the same ...
- 1
2
votes
2
answers
164
views
Is pressure exerted by different forces on a fluid particle same? [closed]
If the closed container containing the fluid (not any air) is moving with some acceleration, can pressure due to a fluid particle's weight be equal to pressure due to a force exerted by another fluid ...
- 21
1
vote
2
answers
108
views
Physical meaning of variation of force of pressure with altitude in fluid
We usually prove that pressure is a function altitute Z. Imagine a cube in a fluid, then the force of pressure on the bottom surface is higher than the force of pressure on the top surface. But we don'...
2
votes
5
answers
1k
views
Woodworking clamps, does force add up?
I was watching a woodworking video about glue, and the guy was clamping two pieces of wood together using a total of 8 clamps. He argued that by doing so he would apply 8 times the maximum force of ...
- 123
4
votes
2
answers
7k
views
Concept of surface tension: excess pressure inside an air bubble in a tank of water
I know the expression for excess pressure inside a LIQUID DROP is :
$$
P_2 - P_1 = 2S/R
$$
where $P_2$ is the pressure just inside the liquid drop and $P_1$ is the pressure outside the liquid drop ...
- 329