Science a GoGo's Home Page Forums General Discussion General Science Discussion Forum Am I Moving?

that was a long time ago , I wonder how he is doing these days.

I cant.

Exactly..

Quoting from Wiki is a bit like quoting from the Bible: there's always another quote!

"In geometry, a position or position vector, also known as location vector or radius vector, is a Euclidean vector which represents the position of a point P in space in relation to an arbitrary reference origin O."

Locating a point is relevant only in relation to another point, so identifying movement is relevant only with reference to some other thing.

The Earth rotates once in 24hrs relative to the sun. If there were nothing else in the Universe, could you still say that the Earth rotates?

You could be a bit lost without one.

What, in fact, you do is accept, albeit implicitly, the idea of "absolute space". Perhaps you do?

So, in your physics an object can be moving and stationary, relative to some other object, in the same F of R, at the same time?

its not my physics , it is physics.



YES !

centripetal force and centrifugal force equations demand the above to be correct.

force requires motion.
more motion = more force.

at the center of rotation there is little centripetal force
& little motion.
at ground level there is more force & motion
at the top of the plane there is even more force & even more motion.

if I am wrong then physics math is also wrong , but figure the odds of that happening.

also , if my physics as you say is wrong , then the earth could
rotate at 500 billion revolutions per second and the plane would never be launched from the ground.
the earth would not be shattered by the forces.

but physics and I are not wrong.

note: when I say physics math = non relativity math that does not use the
bullshit pre defined elements that ensure its correctness.

Then why am I not moving towards the center of the Earth? There is a force holding me down to the floor in here, but I am just staying right here in one place. If force requires motion where is the motion?

Just saying something that doesn't happen to be true doesn't make you particularly smart. You need to check the facts that have been shown to be true by repeated experiments and observations. Then you can say you know something.

Bill Gill

Where did I say that?

centripetal and centrifugal force , Bill.

but since you asked , the force that holds you to the floor
is gravity , which Im almost sure that you knew already.

and guess what ! you are falling towards the center of the earth.

there just happens to be something else that is falling that is blocking your fall.

if you were in a zero g environment you would not be falling towards any object due to any gravity influence.

you would not be moving so your body could not impress a force
on another object.

your body would have mass , but your bodies mass would need to be in motion before it could impress a force on another object.

force requires motion.

well sure , if I use a magic formula that is designed to
show something a desired way , it will always show that it is correct ( it will always show the pre defined desired results ).

here

"...in your physics" = "Your concept of physics is wrong"??

Isn't the evolution of language a wonderous thing!

If something is blocking your fall, does that not stop you from falling?

Trying to fall = falling??? Yet more linguistic evolution, perhaps?

Possibly you will argue that the surface of the Earth is falling, and you are falling with it.
Would this mean that the Earth is shrinking?
Could this be another case of something that is moving and stationary at the same time, in the same F of R?

Good reply. I was just about to make a similar reply, but you beat me to it by just a few seconds. As far as I can tell the surface of the Earth is not falling toward the center of the Earth, it is relatively stationary aside from small tidal and geological movements. It certainly doesn't seem to be moving (falling) down.

Bill Gill

nope wrong answer.

you guys really do need to read about what you write about
before you press the submit button.

every single particle on earth is falling towards the center of the earth.

because of gravity.

and , guess why !!

because every single particle on earth is being accelerated
( Falling due to gravity )
towards the center as the earth rotates.

this is a science forum , why dont you two at least try to
appear as if you have learned something about science.

I know that this stuff isnt the fantasy land of quantum physics , and that it can actually be
calculated ( correctly ) using everyday math , and it does require a little effort on your part ( thinking ) but you guys
may not be capable of thinking along real reality lines.

I'm beginning to think you have a point there, Paul.

I always thought that having a discussion involved exchanging views, not just telling people how stupid they were.

Ok Paul, How fast am I falling towards the center of the Earth? I haven't noticed that the Earth is smaller than it was yesterday. In fact if I check any references I don't find any place that tells us how much smaller the Earth is getting.

Or have you redefined falling to match what you want it to mean the way you did Air Speed?

You see gentle readers how Paul makes up his own definitions and sticks to them with minor modifications so that he can show that he is right even when what he says has nothing to do with what observation and experiment have shown to be the way the world works.

Bill Gill

You seem to be appealing for help because you can't handle this argument on your own. What's up with that?
Is this some kind of religious manipulation thing?
The Reverend uses this same kind of trick when he gets frustrated to pull whatever judgments and frustration there might be in others to gain a feeling of camaraderie and superiority.

Democracy and religious prejudice seem to go hand in hand...

if you were sitting on the roof of your house.

and if you were 4000 miles from the center of the earth and on the equator.

then the circumference of the 360 degree circle that you are traveling in as the earth rotates would be 25,132 miles.

4000 x 2 = 8000 miles diameter
8000 x 3.14 = 25132 miles circumference.

you have a angular velocity of 1047 mph.
25,132 miles / 24 hours = 1047 mph.

in one second your angular displacement is 1535 ft/sec.

if gravity became a republican, and just decided to stop doing its job because it wanted more tax cuts and tax breaks and give aways
to the top 1% , and gravity was not accelerating you towards the center of rotation like is should be doing , then you would launch
at a 90 degree angle away from the center of the earths rotation.

at a velocity of 1535 ft/sec

gravity is pulling / accelerating you at a rate of 32.2 ft/s^2

that doesnt mean that you are falling that fast , thats just how fast that you would fall and accelerate as you are falling if there were nothing stopping you from falling.

your not being pushed down like some of your bone headed colleagues seem to think

http://wiki.answers.com/Q/Does_gravity_pull_things_down_32.2_feet_per_second




he doesnt even konw how to calculate the acceleration due to gravity in the first second , he thinks theres instant acceleration durring the first second of acceleration due to gravity. LOL

ie...