How many miles off the ground do you have to be to reach zero gravity?

Answer 1

Unless you are in orbit around the earth there is no point of zero gravity.

The myth that satellites remain in orbit because they have "escaped Earth's gravity" is perpetuated further (and falsely) by almost universal use of the zingy but physically nonsensical phrase "zero gravity" (and its techweenie cousin, "microgravity") to describe the free-falling conditions aboard orbiting space vehicles. Of course, this isn't true; gravity still exists in space. It keeps satellites from flying straight off into interstellar emptiness. What's missing is "weight", the resistance of gravitational attraction by an anchored structure or a counterforce. Satellites stay in space because of their tremendous horizontal speed, which allows them--while being unavoidably pulled toward Earth by gravity--to fall "over the horizon." The ground's curved withdrawal along the Earth's round surface offsets the satellites' fall toward the ground. Speed, not position or lack of gravity, keeps satellites up, and the failure to understand this fundamental concept means that many other things people "know" just ain't so.

Answer 2

Zero gravity is a bit of a misnomer. It is used to describe the condition when an object is freely falling with no resistance. You can feel zero G in a plane, roller coaster, or elevator. Gravity is still present, however. Something in orbit is essentially freely falling around the Earth.

But oxygen and the rest of the atmosphere (mostly nitrogen) just gradually fade out and extend hundreds of miles over the surface of the Earth. Even where the shuttle and space station are (greater than 400 miles up), there is enough air resistance that there is apparent acceleration of about a millionth of that on the Earth's surface. This is why experiments there are called "microgravity" experiments, not zero G experiments.

Answer 3

1. you will not reach zero gravity at any distance since two objects always have gravity force between them, when you will come closer to other object in space then its gravity will be larger than earths but it will never be zero (unless you will reach infinity distance).
2. you can feel zero gravity on free fall, and that can be reached at any distance from the ground (calculate the time you want to feel it and get the distance from earth).

Answer 4

infinite distance. Space orbital objects like satellites are actually only high enough such that gravity is about 85% of what it is on the ground. So if you built a platform from the ground all the way up, and stood on it. you really wouldnt notice too much of a difference. If you use the inverse square of the distance of the earths radius you get that gravity is about 1% of normal at 64kilometers up

Answer 5

You'll never reach ZERO gravity - unless you go so far that a pull from another body is equally strong.

As you go higher, the pull of gravity will lesson, but it will NEVER reach zero. If it did, we won't be orbiting the Sun. What keeps us in our current position is the pull of the Sun interacting the pull of Earth, and that combined pull is equal to centrifugal force by the rotation of Earth around the Sun.

Answer 6

You would have to be infinitely far away for there to be NO gravity. People in space don't experience "no gravity." Because they have no Normal Force (the force that holds you up), they are free falling (gravity is still pulling down on them).

Answer 7

There's a lot of variables that are needed to answer your question. Perhaps you can read the following wikipedia article and get a better understanding of how zero gravity can be achieved in different circumstances.

Answer 8

There is no zero gravity, as you know that the earth has a gravity to the moon.

Answer 9

The Earth's gravitation field reaches out to the far limits of space.

Answer 10

According to Newton, 63 km if you neglect air resistance, which is equal to about 39 miles. Of course, you are not in zero gravity but free falling.