The mass of each object, and the distance between them.
The two factors related to gravitational pull are (total) mass and distance.
Mass & distance.
Yes. Gravitational pull is based on mass. And since the bowling balls have greater mass than the ping pong balls then the gravitational pull would be greater.
The gravitational pull is always present: there is no "when".
Any two objects with mass will have a gravitational force. The orbit of planets around stars depends on the gravitational pull of the star. The Earth exerts a gravitational pull on its moon but the moon also exerts a pull on the Earth.
Gravitational by the sun, Venus and the moon.
The mass of the object exerting the gravitational pull, and the distance between the two objects. Gravity is all over, but it's effect varies greatly with distance. The girl next to you in Science class is actually exerting a greater gravitational pull on your mass than the Sun, despite their obvious differences in size.
mass and gravity
All masses have a gravitational pull which increases with the size of the mass - if you took a marble though, it would have a gravitational pull but it is too weak to be noticeable. Two mases attract eac other because of their gravitational pull.
The reason that satellites stay in orbit around Earth is because of two factors. Velocity and the gravitational pull between the satellite and the Earth.
There are two factors that affect the gravitational attraction between two objects. The mass of each object and the distance between their centers of mass are the factors that affect the attraction.
inertia and gravitational pull