Why Do Contacting Bodies Exert Normal Force on Each Other?

AI Thread Summary
When two bodies are in contact, they exert a normal force on each other due to electromagnetic interactions between the atoms on their surfaces. This normal force arises because the particles on each surface exert forces along the virtual line connecting them. In ideal scenarios, these force lines are parallel and perpendicular to the surfaces, leading to the resultant normal force. The normal force acts through the center of mass of the bodies involved. Understanding this interaction is crucial for analyzing contact forces in physics.
phymatter
Messages
131
Reaction score
0
whenever 2 bodies are in contact , why do they exert force normal to each other on each other , i mean the normal force .
 
Physics news on Phys.org
Yes. If the 2 bodies are pressed against each other, they will develop a normal force on each other.

Cheers
 
These contact forces generate due to electromagnetic interactions between the atoms on their surfaces...and the answer to your ques that why they are normal is :

Actually when two paticles exert force on each other they always exert it along the virtual line passing through them ... so in real world imagine a no of particles on one surface and a no of them on another ... these particles will exert force on each other in opposite direction and along the lines i wrote above... now for ideally all lines being parallel (because we consider the surfaces parallel in problems), all lines of action of force are parallel to each other and prependicular to the surfaces......and now we consider the forces to sum up and acting through center of mass ... so we get a normal force ...
I hope u get it now.....this was all i know......if I'm wrong get me know...!
 
Thread 'Question about pressure of a liquid'

Thread 'Question about pressure of a liquid'

I am looking at pressure in liquids and I am testing my idea. The vertical tube is 100m, the contraption is filled with water. The vertical tube is very thin(maybe 1mm^2 cross section). The area of the base is ~100m^2. Will he top half be launched in the air if suddenly it cracked?- assuming its light enough. I want to test my idea that if I had a thin long ruber tube that I lifted up, then the pressure at "red lines" will be high and that the $force = pressure * area$ would be massive...
View full post »

Thread 'Why is the 3 body problem unsolvable? And what will happen if someone solves it?'

I feel it should be solvable we just need to find a perfect pattern, and there will be a general pattern since the forces acting are based on a single function, so..... you can't actually say it is unsolvable right? Cause imaging 3 bodies actually existed somwhere in this universe then nature isn't gonna wait till we predict it! And yea I have checked in many places that tiny changes cause large changes so it becomes chaos........ but still I just can't accept that it is impossible to solve...
View full post »

Similar threads

B Fully submerged block in a pool of water
Replies
3
Views
1K
B Normal force in case of inclined plane and banked turn
Replies
3
Views
2K
A Normal force and force of friction inside a tube
Replies
2
Views
2K
B Understanding Newton's Third Law and the Net Force on Objects
Replies
10
Views
229
I Reaction force of and its relation to normal force and friction
Replies
20
Views
4K
I Why normal force is not equal to gravity?
Replies
49
Views
4K
B Is Normal Force a Contact Force Despite Atomic Repulsion?
Replies
5
Views
1K
B Normal force of a body over a circular bridge
Replies
7
Views
3K
B Determine forces acting on double inclined plane
Replies
13
Views
2K
B How's it possible to push on systems with 2 parts? (Newton's third law)
Replies
14
Views
1K

Hot Threads

Recent Insights

Back
Top