How does a planet's size relate to its pull gravity?

Answer 1

In a way, size does not effect a planet's "gravity", its mass does. The more mass a planet has, the stronger its gravitational force.

But the "surface gravity" is affected by the radius of the planet. That's because it depends on the distance of the surface from the center of the planet.

The important equation here is based on Newton's Law of Gravitation:

Gravitational Force = G x M x m / d x d (where G is the Gravitational constant,

M is the planet's mass, m is the mass of an object being attracted, and d is the

distance between the centers of the masses).

Answer 2

The strength of gravity will be proportional to the mass of the planet, and inversely proportional to the square of its diameter (since the combined effect of the gravity, of different parts of the planet, is that gravity seems to come from the center of the planet). Therefore, if two planets have the same density, but one has twice the diameter of the other, its gravity will be twice as strong (mass = 8 times as much; inverse square of the distance = 1/4).

Answer 3

It depends on size and mass.

The earth is fairly small and a surface gravity of 1G.

Jupiter is the largest but not the densest with a surface gravity of about 2.5 Gs.

Neptune just over 1G and much bigger than earth.

The sun would float on any of these densities but it's surface gravity is just about 30 Gs.:DD hope this helped

Answer 4

A planet's size directly influences its gravitational pull. Larger planets have stronger gravitational forces due to their greater mass and larger radius. This results in a stronger gravitational pull compared to smaller planets.

Answer 5

It affects the "surface gravity" because that depends inversely on the square of the distance of an object from the center of mass ofthe planet.

Answer 6

The pull of an object's gravity is proportional to its mass, if measured at a standard distance.