What is centrifugal force?
jdawe
http://www.thekeyboard.org.uk/What%20is%20centrifugal%20force.htm
that asks:
"What is centrifugal force?"
and sets out a problem:
"We can illustrate the central problem of explaining the nature of
centrifugal force by examining how a spin drier removes water from
clothes. We put wet clothes in, turn the machine on, and the drum
spins around at high speed throwing out the water due to centrifugal
force. Simple. The question is how do the clothes 'know' that they are
spinning? Easy, you say, the drum is spinning in relation to the
drier, and the clothes rotate with the drum. If only it were that
simple!"
"We can imagine an arrangement whereby the drum, and hence the
clothes, are kept stationary while the drier rotates rapidly about the
drum, the opposite to what normally happens of course. Now if the drum
rotating in relation to the drier was all that was required for
centrifugal force to draw the water out, then this arrangement would
work in exactly the same manner as the more conventional
arrangement."
"You do not, however, need to be a rocket scientist to be able to tell
that this arrangement would not dry the clothes! This very effectively
destroys the argument that the clothes know they are rotating because
of their movement in relation to the drier. The movement must be a
movement in relation to something else."
"The next logical step is to argue that in the last example it was
obvious that the drum was not really moving, only the drier was, so
let's extend the area. This time we will imagine the drum remaining
still, just as before, but this time we will rotate not only the
drier, but the entire room, around the drum. Will that make any
difference? Again we can see that this arrangement wouldn't work
either, because from our vantage point from outside the room we can
see that the drum isn't 'really' rotating. This does present a problem
though."
"Imagine that we have constructed a large spin drier and we sit inside
the drum and the door is closed behind us. The drum again stays still
but the drier, and the entire room rotate about us. The view that we
see through the door would make us feel quite dizzy, but we would know
that we are not moving because we would feel no forces acting upon us,
we would not be pressed against the sides of the drum."
Well,
To understand this problem we must understand opposing operation:
Naturally we have only 2 opposing physical things in this universe:
Energy
or
Matter
Naturally these 2 opposing physical things can only be in 2 opposing
locations:
The centre ( interior )
or
The orbital ( exterior )
It has long been known that if you have a spinning Merry-go-round and
were to place something like an apple directly on the centre then that
apple stays in the same spot. However, if you were to move the apple
out a bit it orbits around the centre.
So therefore,
The centre is 'At Rest'.
or
The orbital is 'In Motion'.
Naturally depending on whether energy\matter is 'at rest' or 'in
motion' will give us 2 opposing forces:
When energy\matter is 'At Rest' it generates repulsion force
( centrifugal force ).
or
When energy\matter is 'In Motion' it generates attraction force
( gravity ).
In regards to the spin drier it has 2 opposing locations:
The drum 'In Motion' orbiting around the centre 'At Rest' which is the
drier.
or
The drier 'At Rest' in the centre of the 'In Motion' orbiting drum.
Now, you might be wondering how the drier is the centre because at
first glance you might think its the exterior to the drum.
Well,
Let's take a look at a 'spinning top' spinning on its axis.
The point where the spinning top touches the earth is the 'At Rest'
centre where repulsion force ( centrifugal force ) comes up.
So because the drier touches the earth and the drum has an axle that
is supported by the drier then the drier\axle\earth is 'At Rest'
providing repulsion force while the drum rotates 'In Motion' around
the axle providing attraction force.
"Imagine that we have constructed a large spin drier and we sit inside
the drum and the door is closed behind us. The drum again stays still
but the drier, and the entire room rotate about us. The view that we
see through the door would make us feel quite dizzy, but we would know
that we are not moving because we would feel no forces acting upon us,
we would not be pressed against the sides of the drum."
The 'entire room' cannot rotate around the drum on it's own it will
need to be 'earthed' on an axle somewhere. The point where it is
earthed on an axle is the point where the repulsion force
( centrifugal force ) will be generated.
-Josh.
Roy Simms
> need to be 'earthed' on an axle somewhere. The point where it is
> earthed on an axle is the point where the repulsion force
> ( centrifugal force ) will be generated.
>
> -Josh.
Apostrophe's and they're use's, you fucking imbecile.
jdawe
provide a frame of reference, raises another question. The 'fixed
stars', as we are well aware today, are not in fact 'fixed', but are
actually part of a system that is itself rotating - our own Milky Way
galaxy. Even before Mach was born, William Herschel and other
astronomers had provided good evidence that the Milky Way is a
flattened disc of stars, its shape clearly determined by rotation and
centrifugal force"
"Mach might well have argued that there was only two ways in which the
whole galaxy could be seen to be under the influence of centrifugal
force. Either Newton was right, and the whole system of 'fixed stars'
is rotating relative to absolute, empty space; or Berkeley and Mach
were right, and there must be some distribution of matter, far across
the Universe, that enables a frame of reference against which the
rotation of our Galaxy is measured."
The planets are the exterior 'in motion' *IN* the solar system
producing attraction force. The sun is the interior 'at rest' *IN* the
solar system producing repulsion force.
Outside of that, the solar system is the exterior 'In Motion' *IN* a
galaxy producing attraction force. The galactic centre is the interior
of a galaxy 'At Rest' *IN* a galaxy producing repulsion force.
Outside of that, the galaxies as a whole are the exterior 'in motion'
*IN* the local group producing attraction force. The centre of the
local group is the interior 'At Rest' *IN* a local group producing
repulsion force.
-Josh.
Nightcrawler
<crap snipped>
> -Josh.
What kind of tool are you?
hhc...@yahoo.com
Evidently he is a rather stupid 'tool', having never grasped the basic
concepts of Mechanics, or, God Forbid, Classical Mechanics.
Harry C.
hhc...@yahoo.com
Just as an afterthought, does he understand mv^2/r. I'd guess no.
Harry C.
߃-- ¹¹
Tom Roberts
> I came across this website:
> http://www.thekeyboard.org.uk/What%20is%20centrifugal%20force.htm
That page is INCREDIBLY naive. To the point of being wrong. It starts out:
"We are all familiar with the effects of centrifugal force, we
experience it for example every time we are in a car and take
a bend - we feel a force pushing us to the outside of the curve."
That is just plain wrong -- we don't FEEL such a force at all, what we FEEL is
the inside of the car (or a seat belt) pushing toward the INSIDE of the curve.
"Centrifugal force" is not a force at all, it is purely an artifact of using
rotating coordinates. It is a kludge that permits one to apply Newton's laws in
rotating coordinates AS IF they were inertial. When looked at from an inertial
frame, a free object moves in a uniform straight line, and the "centrifugal
force" (plus "Coriolis force" when needed) is precisely the right artifact to
account for its motion in the rotating coordinates.
I put these "forces" in quotation marks, because they are not
real forces, they are FICTITIOUS.
> [... a lot of drivel, most of which is just plain wrong]
Tom Roberts
Sam Wormley
Androcles
"Tom Roberts" <tjrobe...@sbcglobal.net> wrote in message
news:7-idne968dp...@giganews.com...
> jdawe wrote:
>> I came across this website:
>> http://www.thekeyboard.org.uk/What%20is%20centrifugal%20force.htm
>
> That page is INCREDIBLY naive. To the point of being wrong. It starts out:
> "We are all familiar with the effects of centrifugal force, we
> experience it for example every time we are in a car and take
> a bend - we feel a force pushing us to the outside of the curve."
> That is just plain wrong --
That is just plain right, you fuckin' idiot.
LAW III.
To every action there is always opposed an equal reaction; or the mutual
actions of two bodies upon each other are always equal, and directed to
contrary parts.
Whatever draws or presses another is as much drawn or pressed by that other.
If you press a stone with your finger, the finger is also pressed by the
stone. If a horse draws a stone tied to a rope, the horse (if I may so say)
will be equally drawn back towards the stone: for the distended rope, by the
same endeavour to relax or unbend itself, will draw the horse as much
towards the stone as it does the stone towards the horse, and will obstruct
the progress of the one as much as it advances that of the other.
If a body impinges upon another, and by its force change the motion of the
other, that body also (became of the quality of, the mutual pressure) will
undergo an equal change, in its own motion, towards the contrary part. The
changes made by these actions are equal, not in the velocities but in the
motions of bodies; that is to say, if the bodies are not hindered by any
other impediments. For, because the motions are equally changed, the changes
of the velocities made towards contrary parts are reciprocally proportional
to the bodies. This law takes place also in attractions, as will be proved
in the next scholium.
Androcles
<hhc...@yahoo.com> wrote in message
news:ee627a78-6468-4b02...@n38g2000yqf.googlegroups.com...
Harry C.
Just as an afterthought, does Conover understand punctation <question mark>
I don't need to guess, I KNOW he doesn't. He even thinks the shuttle
makes a right turn over Buffalo NY to get to Florida in its "equitorial"
orbit.