the objects fall to the ground
Mass, not density, and the closeness of objects, affects an object's gravitational pull. Density is not dependent on an object's size, but mass is. The more massive an object, and/or the closer an object is to another, the greater its gravitational pull.
A bit more than that. The surface gravity on Mars is closer to 3/8 the gravity on Earth.
The gravitational pull
Objects masses would not change, but the pull of gravity on an object from another object when the first is inside the other is effectively zero when the inside is at the center of mass of the outer. If the Earth were a thick walled but hollow sphere, objects would stick (weakly) to the inside surface as well as the outer.
As their mass does not change their gravitational force remains the same. For them to move closer together one of the objects must have a stronger gravitaional force than the other. If they collided and became fused together then the gravitaional force would be greater as there would now only be one object.
An object have greater gravitational pull closer from earth. As we get farther from earth, the gravitational pull becomes weaker. That is why objects sufficiently away from the earth do not fall on it.
No, this is false. The gravitational force between two objects increases as they get closer.
Move the objects closer together.
The more massive the objects, the greater the gravitational force between them. The gravitational force is affected by mass and distance. The closer two bodies are, the greater the gravitational force also.
If you mean gravitational attraction, there is such a force between ANY two objects. The force depends on the distance (if two objects are closer, the attraction is stronger), and on the masses involved (if the masses are larger, the force is larger). The masses of "everyday" objects, for example two people, are so small (for the purposes of the gravitational force) that the force is hard to measure.
Mass, not density, and the closeness of objects, affects an object's gravitational pull. Density is not dependent on an object's size, but mass is. The more massive an object, and/or the closer an object is to another, the greater its gravitational pull.
the larger the objects the more gravity it can potentially have, the closer objects are the more the attraction they have between them.
When ANY two objects move closer together, the gravitational forces between them become greater.
The gravitational force becomes 4 times stronger than it was before the objects moved closer.
No, it is increased. If the separation is halved, the attraction is quadrupled.
1. Change its mass. 2. Change the mass of objects near it.
-- As two objects draw closer together, the gravitational force between them increases. -- Acceleration is directly proportional to force. -- So their acceleration toward each other also increases.