A lot of scientist's believe that gravity is determined by the size of the planet. I however, believe that gravity is determined by the speed the planet is moving around the star and the speed of the planets rotation.
Gravity causes a pair of equal forces between the centers of every two specks of
mass in the universe, and its characteristics determine the strength and direction
of the forces.
Its mass. Heavier planets have stronger gravitational fields than light planets.
One should take care if you are talking about surface gravity however, since in that case also the radius of the planet is important. A heavy small radius planet has higher surface gravity than a heavy large radius planet. This is because in the former case the surface is deeper in the gravitational well than in the latter case.
the position of the moon. it also depends on what you're talking about
1. The distance separating the objects. 2. Mass of the objects. 3. That's preatty much it...
Mass
An object's mass determines how much gravity it has.
Mass and gravity.
They determine the length of time of the pendulum's swing ... its 'period'.
-- the massses of the two masses that are being pulled together by gravity -- the distance between them
gravity - velocity - windage - obstructions
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An object's mass determines how much gravity it has.
Gravity
You're on to it! Gravity appears to be a property of mass. No mass - no gravity. But exactly what gravity is we don't yet know.
When you weigh yourself, the force of gravity is pulling you down to the scale. Therefore weight is determined by gravity.
Mass and gravity.
They determine the length of time of the pendulum's swing ... its 'period'.
Its handy in shortening equations and sums.
Draingae
gravity and temperature; It needs gravity so it can hold its atmosphere.
that's a difficult one but wait have you hear of earth rotation that maintains gravity.
Volume, density, and gravity.