where does earth's gravitational region ends?

Answer 1

Gravity does not end!

While it gets weaker following the inverse square law, the effect of gravity are infinite. All mass exerts a gravitional field that extends to infinity.

It has nothing to do with magnitic field, rotation, or anything else (the Legrange points are unique points between two objects where their gravational fields are equal, ie. you are being pulled by both masses with the same force. They do not cancel out so much as balance each other.)

Answer 2

It doesn't.

In space, astronauts are not actually in "zero gravity". If they were to build a space elevator that took you to the height of the shuttle's orbit and you stood there on it you would not be weightless. You would only weigh a few pounds less, as a matter of fact.

The shuttle stays in orbit and the astronaut's appear "weightless" because they are in a constant state of frree fall. The shuttle is actually trying to fall to the groud but it's moving in a horizontal direction as well at some velocity and since the Earth is curved, it makes it over the horizon before it gets a chance to get closer to the ground.

This is why the shuttle actually goes around the Earth. It is continually falling but never gets closer to the grouund.

The astronauts appear weightless because they are falling.

The actual gravitational field of earth, or any other spherical object for that reason, is g = (GM)/r^2

G is the gravitational constant, M is the mass of the Earth, and r is the distance from the center of the Earth. When r = the radius of the Earth the magnitude of the gravitational field is 9.8 m/s^2

This field never drops to zero. The farther out you get, the closer to zero it becomes though.

Answer 3

For all practical purposes the Earth's gravitation field ends at about 1,000,000km from Earth. Beyond that point it is not factored into interplanetary trajectory calculations. In reality the Earth's gravitational effect continues to infinity.

Answer 4

I was going to say infinity, but that isn't quite true. If you start with the formation of the planet, then the gravitational field of the body called earth can only extend to 4.6 billion light years in all directions. The earth's age is 4.6 billion years, and as far as we know gravity's influence travels at the speed of light. The means it's still expanding, but its strength weakens with the square of the distance and is undetectably small much beyond the inner solar system.

Answer 5

Effectively it ends whhere the gravitational pull of another object is eaual and opposite of the eath's gravitational pull. These, around the earth are called Lagrange points.

Answer 6

there's no exact boundary to earth's gravitational region,it simply diminish as we move farther away.
In fact, at an altitude of 250 miles (roughly the height that the space shuttle flies) gravity is still nearly 90% as strong as at the earth's surface, and weightlessness actually occurs because orbiting objects are in free-fall.
gravitational region of a object never ends,As we move away we just encounter more powerfull gravitational field of anther object

Answer 7

earth's gravitational field is around us even if we are up in the space station, although they say it is a zero g environment, it actually isnt, the reason that you are floating around in the space station is because of gravity, and the speed that the space station is going to keep in orbit around earth. think of free falling. if you drop a dummy in a car and the dummy's arms are not strapped down, they will "float upwards" due to the negative G's that are acting upon the car. this is why they take astronauts up into a plane and repeatedly climb and dive to simulate the effects of "zero G"

Answer 8

Just think about the moon, it is in Earth's gravitational pull and that is around 250,000 miles away...

Answer 9

It does not, In Science 101 - You have a Ball rotating - and combine that with an Electrical North and South Magnetic Pole, You have Gravity. It covers the whole planet and even part of Space.

Answer 10

It cancels out at what are called Lagrange points. After the French astronomer-Mathematician Joseph Lagrange. Im not sure if I got his firt name right. These points are between the Moon-Earth,Sun-Earth.