If gravity is sucking energy out of the system we need to understand where it is going?
The critical path question Malf, thanks. We had this answered already, just waiting for the mental lights to turn on, if ever.
Entropy....... not gravity....
If gravity is sucking energy out of the system we need to understand where it is going?
The tangential component of gravity (Fgrav-tangent) is unbalanced by any other force. So there is a net force directed along the other coordinate axes. It is this tangential component of gravity which acts as the restoring force. As the pendulum bob moves to the right of the equilibrium position, this force component is directed opposite its motion back towards the equilibrium position.
What the paper is citing is that my Ff factor needs to be reduced (improved) to a Padé approximation - combining rolling friction and sliding moment friction introduced by the air resistance (which averages to a horizontal vector over one full single direction swing) - which is below the level of discrimination of this whole drawing to begin with.
The drawing is a model, a guess, as to the type of attachment to begin with, so I am not sure valuable knowledge can be derived from quibbling to this level of physics? My model is not pretending to dip to this level of precision to begin with. I would need the actual schematics of the bag and its hanging mechanism, then the actual materials as well and their surface lattice structures - then apply the particular Ff for that exact design.
Are you now asking me to run the integral calculus and derive a combined function for the modulus of rolling and sliding friction... to replace my Ff factor so that it is uber accurate...?
Entropy literally has thousands of expression calculations.
One form of entropy is friction. The force of friction in a compound machine = entropy. I gave you the recitation on this. How can I reduce it any lower than that? You have a scientific paper outlining this very mathematical instance of force of friction upon a combined fulcrum calculation in your hands.
A skydiver is not a compound machine. He IS the fulcrum. In a compound machine the force is DELIVERED to a fulcrum. This fulcrum is the point at which a system engineer measures system entropy.
I give up trying to explain it to you. It is strange that it is just the one side of this argument who fully believe in Apollo that don't seem to be able to understand what is actually very clear. Funny that.
Can't anyone read?
Can't anyone see?
It's difficult to understand what you're not getting... You know "equilibrium position" is not the same as "stationary" right?
No, I'm not asking that, and nor am I merely quibbling either. I'm asking how you justify why you are multiplying that which you refer to as a "Fulcrum friction" quantity, related to one part of a body, and with the units of newtons, by that which you refer to as an "Aerodynamic drag" quantity, related to other parts of the body, and with the units of pascals, to end up with a quantity with the units newton-pascals,
whereas entropy, where it even has units at all, actually has the units of joules per kelvin (see Wikipedia's Entropy article). So, what relationship does your "entropy effect" have to actual entropy?
Then I use these three things to create an entropy effect index
This is how your procedure looks to me, framed in terms of the sort of thought-processes I imagine went into it:
"The tangential component of gravity (Fgrav-tangent) is unbalanced by any other force. So there is a net force directed along the other coordinate axes. It is this tangential component of gravity which acts as the restoring force. As the pendulum bob moves to the right of the equilibrium position, this force component is directed opposite its motion back towards the equilibrium position."
It's difficult to understand what you're not getting... You know "equilibrium position" is not the same as "stationary" right?
An object in motion keeps moving unless there is a force to make it stop.
let's call this inertia the moving force.
There is another force, the restoring force.
The restoring force acts continuously on the moving force.
Now for the pendulum.
Look at the diagram, the restoring force is not pulling the pendulum back to toward the original beginning point! It is directed downward.
Once again, The restoring force acts continuously on the moving force.
So the moving force becomes less and less as the restoring force works on the moving force.
The swinging continues until the moving force is not stronger than the restoring force.
Bringing the state to rest in the equilibrium position.
The conservation of energy is preserved through the transformation of kinetic energy to potential energy.
Can you not understand this?
What’s providing the moving force?
(Hint: it begins with “g”)
The moving force (by definition) offers no damping.
You need to talk to an engineer or physics grad (of your choosing) about this and get back to us. It’s getting cringey.
Sigh!
A person provides the potential moving force by lifting the bob to one side against the restoring force of gravity.
We then have the force of tension from the bob to the pivot point, that is constantly changing in direction and magnitude as opposed to the constant restoring force that is directed downward.
Because they are not equal in magnitude or direction, they ultimately come to balance, as I described.
It is called a restoring force because it restores back to the original state.
I am not the one who is confused Malf.
Something or someone lifts the bob up but the bob moves down on release. This is gravity starting the motion: providing the moving force from the potential energy imparted. No gravity = no potential = no swing.
Assuming perfect conditions (no air resistance, no friction etc) we then have a perfect system for converting potential energy into kinetic energy, then back again, with 100% efficiency. It will swing forever. There is no energy leakage (but feel free to describe some?)
The ’restoring force’ restores the potential energy to the system, having been momentarily lost to kinetic energy as the bob traversed from one side to the other. At maximal potential, kinetic is zero. The bob stops, and returns on its journey.
Gravity works on the pendulum while it is moving. The moving force becomes less as the force of gravity acts on the pendulum. The pendulum slows and then returns to the starting point. This swinging-back-and-forth force continues until the force that started the movement is not stronger than gravity, and then the pendulum is at rest again.