Principle of Moments: Restoring Forces Explained

  • Thread starter Thread starter kittu1421
  • Start date Start date
  • Tags Tags
    Moments Principle
AI Thread Summary
The discussion centers on the mechanics of equilibrium in a beam or scale supported at its center with equal weights. When one weight is lowered by an external force, the question arises about how the system returns to a horizontal position. Restoring forces are generated due to the change in potential energy and the geometry of the beam. A straight bar on a pivot does not return to horizontal, while a slightly curved bar does because of its design. The dynamics of these systems illustrate the principles of stability and equilibrium in physics.
kittu1421
Messages
10
Reaction score
0
This has botherd me for quite sometime ...imagine a beam or a simple scale supported at its centre and carrying equal weights on two extreme positions on the scale from the centre, now under equilibrium the scale will be horizontal...now my question is if one of the weight is lowered by action of some external force, how does it come back to its horizonatal config. What and how are the restoring forces generated...??
 
Physics news on Phys.org
A straight bar on a razor-edge pivot would not come back to its horizontal config but a slightly curved bar with its ends lower than the pivot would. I think you can figure out why.
 
gottcha...
 
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 Direction of buoyant force on sunken object?
Replies
15
Views
3K
Forces involved in principle of virtual work
Replies
2
Views
703
Very confused about normal Force
Replies
10
Views
4K
I Rolling Without Slipping
2
Replies
59
Views
3K
I Feynman's reversible and irreversible machines
Replies
5
Views
5K
Equilibrium of Forces and Torques on Sawhorses Supporting a Person on a Board
Replies
6
Views
2K
How Does Zero Moment Point Influence Robot Stability?
Replies
1
Views
1K
Engineering Instantaneous Center of Rotation (Polplan in german) and STATICS
Replies
1
Views
1K
Book plots position & force on the same graph, still gets right answer
Replies
8
Views
814
Raising a farm windmill tower
Replies
5
Views
2K

Hot Threads

Recent Insights

Back
Top