gravity...
Inertia is the "force" that causes an object in a curved path to pull away from the center. Inertia is actually the tendency of anything with mass to resist a change in motion. In other words, an object at rest will not move because of inertia, unless it is acted on by an unbalanced force, and an object in motion will continue to travel at a constant speed in a straight line unless acted on by an unbalanced force. An object traveling in a circular path pulls away from the center because inertia tries to keep the object traveling in a straight line.
The exact scientific explanations of gravity are far too complex for this forum. The simple explanation is that every body that has mass attracts every other body that has mass. The more massive the two bodies are the more they attract each other. The more distant they are, the less they attract. Earth has a huge mass, billions and billions of times the size of a human. All of that taken together pulls everything and everyone toward the center of the earth. You may not be aware of it, but your body is also pulling the earth toward you. We can see the effect of a smaller body pulling on a larger one when we see the tides. The moon, a quarter of a million miles away, is affecting the water and the outer crust of the earth, even though the moon is only a little more than 1% of the earth's mass. Further out, tiny Pluto was discovered (in part) because it was affecting the orbits of the gas giant planets Neptune and Uranus.
The Earth's gravitational force keeps it from moving away into outer space. (* Gravity is a mutual force of attraction between matter, so the Earth pulls on the Moon while the Moon pulls on the Earth.)
When on Earth, you can escape if you move away from the Earth at the "escape" speed. Gravity will slow you down and you will reach zero speed at an infinite distance.
When an object is released on earth (so it is free to fall), there are two forces that take hold. Gravity and Buoyancy. Gravity, of course, is what pulls matter to matter, and pulls us, and everything else towards the ground here on earth. Buoyancy is what makes things float. If the Buoyancy forces is stronger then the force of gravity, then the object will float away, at least until the buoyancy force levels out with the gravity force. Examples of buoyancy overpowering gravity is like a helium balloon floating away, or a boat floating on the water (gravity pulls the boat down, but the buoyancy over the water allows it to float).
Inertia is the "force" that causes an object in a curved path to pull away from the center. Inertia is actually the tendency of anything with mass to resist a change in motion. In other words, an object at rest will not move because of inertia, unless it is acted on by an unbalanced force, and an object in motion will continue to travel at a constant speed in a straight line unless acted on by an unbalanced force. An object traveling in a circular path pulls away from the center because inertia tries to keep the object traveling in a straight line.
it's centrifugal force..
There are two forces responsible for an object to stay in orbit Namely-- 1-Centripetal Force --Which pulls any object toward the center 2-Centrifugal Force --Which push any object away from the center
The exact scientific explanations of gravity are far too complex for this forum. The simple explanation is that every body that has mass attracts every other body that has mass. The more massive the two bodies are the more they attract each other. The more distant they are, the less they attract. Earth has a huge mass, billions and billions of times the size of a human. All of that taken together pulls everything and everyone toward the center of the earth. You may not be aware of it, but your body is also pulling the earth toward you. We can see the effect of a smaller body pulling on a larger one when we see the tides. The moon, a quarter of a million miles away, is affecting the water and the outer crust of the earth, even though the moon is only a little more than 1% of the earth's mass. Further out, tiny Pluto was discovered (in part) because it was affecting the orbits of the gas giant planets Neptune and Uranus.
Centripetal force is the force toward the center of a circular path. It is often confused with centrifugal force, which is the force away from the center.
There is no force directed away from the center.If there were no force at all on the object, it would continue to travel in a straight line.The force directed inward, toward the center, is what bends its path around the center.
In the same direction of the force (if near the center of balance). If the force is away from the center of balance, it might spin it.
Center of gravity toward the center of the body absorbs. Centrifugal force away from the center of the object. Centripetal force is real. Centrifugal force is made up and doesn't exist.
The object launched into space has rocket motors with more force taking it away from Earth than Earth's force of gravity has in pulling the object toward its center.
The force that keeps objects moving in a circle is known as the centripetal force, which acts towards the center. The velocity of the object moving in a circle will be tangential to the circle.
When a force is applied to an object, it accelerates. for example, if you push an object, the object accelerates away from you and, eventually, will move away from you..
You have a centripetal force whenever you have any force that attracts an object towards the center of its circular movement. In some cases, the centripetal force is what keeps an otherwise free object in a circular (or elliptical) trajectory in the first place - like when the Sun attracts the planets. In other cases - such as in a flywheel - the outer parts pull outwards (because of their inertia), so, by Newton's Third Law, the center of the movement pulls inward, providing the centripetal force. (If the outward pull is too strong, the objects that moved in a circular trajectory will break away.)