Originally posted by wolfgang59I can't compute that. If the force of gravity between objects is equal, then it seems that there would be a canceling out of the force of both objects on each other.
???
The Earth pulls me with a force of 90N.
And I pull the Earth with a force of 90N.
The force on me is 90N.
Not 180N or zero!!!
It seems that the earths "pull" would be greater, otherwise objects would float away.
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Originally posted by josephwA thought experiment: Suppose you have two Earth masses but they are held apart by a very strong ring connecting the equators so the masses can come close, say a mile apart between the closest surfaces. In a case like that, if you have a ladder between the planets, half way up you can let go the ladder and you would float in space because there would be zero gravity at the point halfway between the two planets.
I can't compute that. If the force of gravity between objects is equal, then it seems that there would be a canceling out of the force of both objects on each other.
It seems that the earths "pull" would be greater, otherwise objects would float away.
Of course that kind of thing would never happen in OUR universe but just as a thought experiment, the two gravity fields would cancel 1/2 mile up (halfway point between the two planets) Now make the one planet Earth mass and the second planet half the mass of the first. Then the place where zero gravity happens would be closer to the smaller mass and so forth. Now if you continue that till you are down to 100 Kg, there would be no point where there would be a zero gravity because the mass of the planet overwhelms the mass of the 100 kg.
For the first example, two planets very close like that, the overall field would be attracting the planets together and they would become one planet because the force of gravity would crush them together if the ring connecting the two were to disappear.
There was actually a sci fi story about that where people could float from one planet to the other, where the two were spinning around each other but were far enough apart not to touch.
A bit contrived for sure but theoretically that's what could happen.
The formula for the force between two objects is this:
F= G*M1*m2/ square of the distance between the two. Units in meters, kilograms and the force is in Newtons, where a Newton is about a quarter pound, a pound is about 4 Newtons.
G is the gravitational constant, which works out to about 6.67 E -11, just a number that helps calculate the force. So you can see if M1 is say 1000 kg and M1 is 1 kg the multiplier is 1000 but if M1 is 1000 kg and m2 is also 1000 kg the multiplier is one million. So if you put in the mass of Earth (about 6 E 24 Kg) as M1 and your weight, say 100 Kg as M2, you might as well just ignore the 100 kg part, there wouldn't be much difference in the force if it were 1 kg or 1 million kg since the difference is so great, 6 with 24 zeros after it compared to 1 or 100 kg.
So real numbers: lets make M1 and M2 be 1000 Kg each. so 1 million times 6.67 E-11, that is 6.67 E -5. Now lets make the distance 1 meter between them. So that makes the divider 1 times 1 or just 1 so the force is 6.67 E -5 Newtons, not much, eh.
So lets invert that 6.67 E-11, we get about 1.5 E 10. square root of that is 122,443 which is the mass of M1 and M2 where two masses 122 thousand kg each at a distance of 1 meter would give a force of 1 Newton between them.
The math for that: 6.67 E-11 times 122,443 Kg times 122,443 Kg divide by 1(one meter separation times itself, one squared) would be one Newton of force between them.
That mass would be in tons, about 134 tons for each mass. So the force between them when the masses are separated by one meter (about 3 feet) would be amount to about 3 1/2 ounces. That is a simple version with units that would give 1 newton of force. It works the same for Masses the same as Earth and a 10 Kg mass or 100 kg mass of a person or 100 Kg of milkshakes, doesn't matter what it is.
The distance part is in meters but for Earth that is the distance to the center of Earth or the radius in meters. So a real example, 6 E 24 (6 with 24 zeros) (mass of Earth in kg) times one of us, say 100 Kg (my weight) times G (6.67 E -11) divided by the radius of Earth squared, the radius is about 6.37 E 6 meter and squared is about 4 E13. So putting that together, 6 E24 times 6.67 E -11 times 100 = about 4 E16 divide by (6.37 E6) squared or about 4 E 13 so 4 E 16 divided by 4 E 13 = about 1000 NEWTONS multiply by .22, gives about 220 pounds of force.
If it was the mass of Earth times 1 kg the force would also be 1/100 th of that or10 newtons or 2,2 pounds,
So you can calculate the force of gravity between ANY two masses just knowing G, the mass of mass one and the mass of mass 2 divided by the square of the distance between them.
Originally posted by sonhouseYep.
Don't you mean 90 KILOGRAMS? I weigh in at almost exactly 100 Kg.
If your force was 90 Newtons you would weigh 12 pounds....
I typed 90kg then thought my old Physics teacher would be turning in his grave if I measured force in kg so changed it to Newtons without adding a zero. SORRY. 😞
Originally posted by josephwEqual AND opposite.
I can't compute that. If the force of gravity between objects is equal, then it seems that there would be a canceling out of the force of both objects on each other.
It seems that the earths "pull" would be greater, otherwise objects would float away.
And NO. The Earth's pull on you is NOT greater than your pull on the Earth.
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Originally posted by josephwPerhaps, just perhaps mind you, maybe there WAS no creator. Maybe it all came about through natural laws working with the energy and water and soil and early pre biotic molecules supplied by solar flares 3 billion years ago. It is now known solar flares could take the N2 and O2 and C in the atmosphere and the energy of those flares cause those simple molecules to turn into more complex ones, perhaps the fundamental kick start of life on Earth. Then molecules being activated by UV from the sun and lightning from storms crunching into clay or some such that can make known chambers like membranes and that made things ever more complex till BOING, a cell came forth, but not just one cell because the experiment was repeated quadrillions of quadrillions of times, lots of cells happened in short order, here, in what would become South America, there in what would become Antarctica and so forth.
But how do you know gravity even exists? Oh, I see, because you can detect its effects. But you can't detect the effects of a creator. What's wrong with you? 😉
A MUCH more believable scenario than your bible god, which after all is said and done was just a bunch of tales written by clever men with no input from any kind of deity needed.
But of course you scoff, you who are totally brainwashed by your dubious religion.
Originally posted by sonhouse",..you who are totally brainwashed by your dubious religion."
Perhaps, just perhaps mind you, maybe there WAS no creator. Maybe it all came about through natural laws working with the energy and water and soil and early pre biotic molecules supplied by solar flares 3 billion years ago. It is now known solar flares could take the N2 and O2 and C in the atmosphere and the energy of those flares cause those simple molecu ...[text shortened]... ty needed.
But of course you scoff, you who are totally brainwashed by your dubious religion.
That sounds like scoffing to me. 😉
Why make it personal sonhouse? You could try phrasing it more objectively. Less emotion. If you want to believe everything came into existence by chance without God that doesn't hurt me at all. I believe otherwise, and why should that cause you so much grief?
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Originally posted by josephwI grieve for the billions caught up in the scam which i fell is keeping the species of humans from maturing as a race. Nothing against you personally.
[b]",..you who are totally brainwashed by your dubious religion."
That sounds like scoffing to me. 😉
Why make it personal sonhouse? You could try phrasing it more objectively. Less emotion. If you want to believe everything came into existence by chance without God that doesn't hurt me at all. I believe otherwise, and why should that cause you so much grief?[/b]
But you have to contend with a lot of contradictions in your bible, if not outright lies. Like the begats who begatted who begatted leading to the absolute nonsense of BILLIONS thinking Earth to be 6000 years old.
Then anthropormorphizing your deity with such nonsense as 'I am a jealous god' but of course NT folks can disregard that one, right? But it IS in your bible. That and a thousand other tales in the bible that say 'man made'. But of course you can never think those seditious thoughts can you? No doubting the religion, the religion is sacrosanct and infallible, right? Not a word in the bible can be wrong, right?
Originally posted by sonhouseWas this another sci-fi thing you watched?
Perhaps, just perhaps mind you, maybe there WAS no creator. Maybe it all came about through natural laws working with the energy and water and soil and early pre biotic molecules supplied by solar flares 3 billion years ago. It is now known solar flares could take the N2 and O2 and C in the atmosphere and the energy of those flares cause those simple molecu ...[text shortened]... ty needed.
But of course you scoff, you who are totally brainwashed by your dubious religion.
Because it sure sounds like one!
Originally posted by sonhouseTry to understand this; you're way over complicating it.
I grieve for the billions caught up in the scam which i fell is keeping the species of humans from maturing as a race. Nothing against you personally.
But you have to contend with a lot of contradictions in your bible, if not outright lies. Like the begats who begatted who begatted leading to the absolute nonsense of BILLIONS thinking Earth to be 6000 ...[text shortened]... , the religion is sacrosanct and infallible, right? Not a word in the bible can be wrong, right?
Just break it down to one simple thing. Think about living forever. It's not a lie. You can.
Originally posted by sonhouseSpeaking of brainwashed millions following a religious scam built on lies and demonstrable errors, how's that whole round earth NASA thing going?
I grieve for the billions caught up in the scam which i fell is keeping the species of humans from maturing as a race. Nothing against you personally.
But you have to contend with a lot of contradictions in your bible, if not outright lies. Like the begats who begatted who begatted leading to the absolute nonsense of BILLIONS thinking Earth to be 6000 ...[text shortened]... , the religion is sacrosanct and infallible, right? Not a word in the bible can be wrong, right?
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Originally posted by FreakyKBHForgive me if i'm not bowled over by the sheer hugeness of the detailed explanations you have provided in answer to my questions. I was hoping for something a little bit more substantial. Let's try again. One question at a time.
[b]1. The constellations are upside in the southern hemisphere and vice versa?
Works on a flat earth, too.
2. How can it be dark on one side of the planet and light on the other?
Sun is closer than previously taught.
3. Water going down a plug hole goes in opposite directions depending whether you are north or south of the equator?
That has been debunked several times.[/b]
How come the constellations are upside in the southern hemisphere and vice versa?
Of course it goes without saying you believe this works on a flat earth too, i get that bit. The question though is 'how'?
Originally posted by FreakyKBHLow orbit or no low orbit, the picture shows the earth is not a disc. Which surely means to a flat earther the picture has to have been doctored.
The last time you posted it, the link went to a variety of images.
This image is a partial shot of the earth, not the entire earth.
I won't bother going into this shot, as I have not argued against low orbiting objects--- although I wouldn't be surprised to find out the shot was doctored nonetheless.
Show a shot of the whole earth, and I will show you an altered image.
Originally posted by Proper KnobTake a look at a FE map and you'll see how.
Forgive me if i'm not bowled over by the sheer hugeness of the detailed explanations you have provided in answer to my questions. I was hoping for something a little bit more substantial. Let's try again. One question at a time.
[b]How come the constellations are upside in the southern hemisphere and vice versa?
Of course it goes without saying you believe this works on a flat earth too, i get that bit. The question though is 'how'?[/b]