Earth Gravitational Force Of Attraction Vanishes At

[Pricilla Igoe]

Presumingthe Earth is in an optimal orbit relative to it's mass and composition, as science and ToR tell us, and relative to gravity, or the gravitational pull of the sun at this distance away.... Why is Venus, similar in size and composition, pulled into the sun? Isn't this a necessary result of gravitational theory? As well, obviously, Mercury, how would it achieve a balance at a distance where the gravitational force is much stronger than 1au?? It's also further away from the influence of the giants as well. These two planets smash gravity theory into non-existence. The planets are held in orbit by electricity. They are in vibrational grooves, like a phonograph, but imagine the needle(planet) has to fit in the right groove. Resonance keeps the body in the groove. It can be seen in the plasma arches on the sun. They are identical to magnetic field arches. EM fields propagate in the same manner, we are of course aware of them, but the magnetosphere doesn't just deflect space, it is ewhat bonds us to the sun. Exactly like electrons orbiting a nucleus. Idk how we have not figured this out yet. Peace

I'm sorry to hear about your step father. I've done a lot of digging but I didn't know that story.

Thank you for this sanity amongst all the bs that I am reading. I was actually trying to research why exactly the moon shows the same side to earth all the time. "Apparently" it takes EXACTLY the same amount of time to rotate as it does to complete a full orbit of earth. How coincidental. Also "apparently" it's kept in orbit by the earth's gravitational pull. So the earth's 'gravity' somehow manages to be strong enough to hold something 1/4 of it's size that is 384 400km away and precisely hold it in orbit day after day for thousands of years. That's some pretty strong gravity.

#Chris, that makes sense. I read somewhere that the earth's gravity extends to a distance billions of light year away, in fact as old as the earth itself. I now understand why they put it that way. In fact the answer is infinite and not zero according to the inverse square law.

youre saying that because the space station and astronaut are both affected by gravity and have the same acceleration they experience what is called zero gravity? yet while traveling in a car, the car and myself are both affected by gravity and accelerating the same yet no zero gravity....

Gravity obeys an inverse square law; although the intensity falls with distance, it is never zero. That said, local factors opposing gravity may predominate in certain areas. For instance, a supernova will blast the constituents of a star out into space; but those particles will still feel the effects of gravity and eventually will most likely coalesce somewhere else.

However is it correct there is not sufficient atmospheric pressure (i.e zero) to hold a human together. The astronaut is in a vacuum and without a spacesuit would explode (given they were able to survive extreme temp, radiation and zero oxygen)?

If there were no gravity the ISS would move away from the Earth in a straight line along a tangent to its present orbit. Gravity accelerates the ISS towards the Earth continuously, meaning it's constantly falling towards the planet but "missing", because the Earth curves out of the way. I hope that makes sense?

Gravity obeys an inverse square law - 1/r^2 - so if you double the distance from the centre of mass, the gravity you feel at the new location is 1/(2^2) = 1/4 of what you felt at the first location. But it's not zero.

The question says "At what height above Earth is zero-gravity?" The answer, as given - is at no height is there zero gravity, because although, at vast distances, 1/r^2 means that the gravitatonal acceleration will be very low, it's not zero.

Pluto is 5 billion kilometres from the Sun, but the reason it orbits the Sun is because, despite that huge distance, it still feels the gravitation acceleration of the Sun and follows an orbital trajectory. The Sun orbits the centre of the Milky Way galaxy, which is thousands of light years away, but there is still a sufficiently strong gravitational influence to keep us on our present path...

The question isn't answered. I would assume the amount of gravitational attraction would depend on the mass of each object. Therefore the smaller the object the less distance it would take to escape the gravitational attraction of the earth. So what would that distance be for the Space Shuttle for example?

The size of different objects would determine how much things are atracted to them but not how much they are atracted to other things. This is why you can drop a feather and a bowling ball on the moon and they hit the surface at the same time. Truly feathers have always had the speed to fall as fast as anything else but unlike larger denser objects such as bowling balls,feathers do not have the mass and therefore the momentum to push through the air which is why they fall so slow on earth.

You are correct that a feather and a bowling ball dropped on the moon will hit the ground at the same time. Both are being accelerated by gravity, but the gravitational pull between the bowling ball and the moon is greater than the moon and the feather; but the ball's mass is significantly greater than the feather; so the greater force of attraction is negated by the greater mass; hence both fall at the same rate.

Yes feather and bowling ball fall at the same rate because the acceleration of gravity is the same for both the bowling ball and there is no air resistance going against the feather on the moon. Same case on earth in a vaccum, acceleration of gravity is 9.8 m/s^2 hence both objects fall at the same speed because they are on earth with no air resistance or friction. BUT you are correct the bigger the mass the more it is likely to be attracted to another even bigger mass. So the further the ball goes away from earth the gravitational force weakens but not as much as the feather. Which has nothing to do with how fast an object falls on a planet or moon .

In relation to one of my questions, Earth was destroyed after hit with a weapon that tore the planet apart by magnetic and gravitational force which does leave a large segment left floating. The rest of the mass is about in either a ring or impacted back into the remaining mass.

Now, with the distortion of and loss of pull in gravity, the pull on the moon might differ or the orbits might change. I don't quite know what the outcome would be for the moon. It's important for me to know because there's a whole mining colony stationed on the moon; I'm not expecting survivors since I expect earth-debris would rain down on the moon at one point or another.

Would the moon stay in orbit, of either earth's remains or around the sun? Or would the loss of earth cause the Moon to turn rogue and get ejected from the system/pulled into the orbit of another planet (like mars)? or would the moon's pull start to move the earth? I don't know which of these theories would be most likely to happen.

That barycenter is located within Earth (and changes location as the Earth rotates), but does not coincide with the center of Earth. It is located 4,670 km away from the center of Earth (for comparison, Earth's radius is about 6,380 km).

Earth was destroyed after hit with a weapon that tore the planet apart by magnetic and gravitational force which does leave a large segment left floating. The rest of the mass is about in either a ring or impacted back into the remaining mass.

If all the mass of the Earth stays within its original sphere of influence and Hill sphere, then the orbit of the Moon will remain largely the same. There might be disturbances as the barycenter of the system is displaced as the Earth is torn apart, but that's it.

It would depend on the details of how the Earth was shattered and where the debris went. But in outline the Moon would probably be bombarded by Earth debris imparting huge amounts of energy and possibly liquefying large parts of it. It is possible that the Moon itself would also be disrupted.

Which ever way it went the debris of the Earth and the wrecked Moon would continue on in a roughly Earth shaped orbit although the Moon and the debris might well spread out into an inner asteroid belt. There would be some variation in the Moons orbit depending on the position with respect to the Earth and the Sun at the point of impact, but this would not deviate greatly from Earths orbit.

If the Moon survived it is reasonable to assume it would be repeatedly hit by debris in the following years and might even eventually form the basis of a new planet sweeping up the debris, but this could take a very long time.

Weightlessness is something many of us have dreamed about since we were kids. We have seen footage of astronauts floating around the International Space Station playing Ping-Pong with balls of water and Pac-Man with strings of M&Ms.

For a moment, as we watch these astronauts thriving in an environment completely alien to us, we are able to imagine ourselves floating around with them. Unfortunately, the magic is short-lived. The weight of our rear ends pressed firmly into our seats brings us crashing back to planet Earth, back to reality.

Weightlessness may only be for astronauts, but with the help of private companies like SpaceX, Blue Origin, and Virgin Galactic, becoming astronauts may not be so far-fetched. Our dreams of floating in space are closer to becoming reality than ever before.

Our weight on Earth depends on our mass, which is how much matter we are made of, as well as the force of attraction between our mass and the mass of planet Earth. This attractive force, more commonly known as gravity, is a non-contact force that acts on us from a distance. As the name implies, a non-contact force is one that acts between two objects that are not in physical contact with one another, meaning that we need not be touching Earth for gravity to be acting upon us. In fact, we do not feel the force of gravity unless there is some opposing contact force to counteract it. This opposing force is termed normal force, which in contrast to gravity, is a contact force that acts upon objects that are physically associated with one another.

3a8082e126