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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).
Wiki User
∙ 11y ago
Wiki User
∙ 14y agoThe 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).
Wiki User
∙ 11y agoIt 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
Wiki User
∙ 11y agoIt affects the "surface gravity" because that depends inversely on the square of the distance of an object from the center of mass ofthe planet.
Wiki User
∙ 10y agoThe pull of an object's gravity is proportional to its mass, if measured at a standard distance.
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What is venus's gravity pull?
Yes it does. All objects have gravity but the amount of gravity depends on the mass of the object.
Why is why is there gravity on some planets but not on others?
There is gravity on all planets. The strength of that gravity varies depending on the size and mass of each planet.
Is it true that the closer the planets are to the sun then the less gravity the planets have?
No. The surface gravity of a planet depends on its size and mass, not its distance from the sun.
How gravity affects us on different planets?
The larger the planet is, the more amount of gravity you will get. The smaller the planet is, the less amount of gravity you will get.
What effect do planets have on the stars they orbit?
The gravity of the star is usually many times larger than the planets due to the overwhelming mass of the star in comparison. The planets do have a gravitational pull of their own though, which has an effect on the star it is orbiting. It will cause the star to move slightly off centre as it pulls on the star during its orbit. The bigger the planet, the bigger the pull. By looking at distance stars, astronomers can see the effects of planets by observing a 'wobble' in the star as the unseen planets orbits it. They can then calculate the size of the planet and distance by the size and speed of the wobble.
How did gravity relate the shape and size of the universe?
because the suns gravitational pull is so large that the planets stay close to together
How is the planets size related to the pull of its gravity?
The larger the mass of the planet, the greater the force of its gravity.
What is venus's gravity pull?
Yes it does. All objects have gravity but the amount of gravity depends on the mass of the object.
Is earths gravity strong or weak?
Earth technically has a weak gravity because it is one of the smallest planets compared to the others. The greater the size or mass the more gravitational pull it has.
Why is why is there gravity on some planets but not on others?
There is gravity on all planets. The strength of that gravity varies depending on the size and mass of each planet.
Does earth have strong or weak gravity?
Because of Earth's size, and considering it as one of the smallest planets, it has a weak gravity compared to the OTHER planets. Most planets have greater gravity because of their size. Earth has a stronger gravity compared to mars, mercury, and venus.
Is it true that the closer the planets are to the sun then the less gravity the planets have?
No. The surface gravity of a planet depends on its size and mass, not its distance from the sun.
Which planet has the strongest gravity?
Earth has the strongest gravitational pull.
How gravity affects us on different planets?
The larger the planet is, the more amount of gravity you will get. The smaller the planet is, the less amount of gravity you will get.
Do earthly objects decrease in size on planets with greater gravity?
No. They increase in weight.
How slow do planets orbit?
It depends on their size, mass, distance and strength of gravity.
Why is there gravity on some planets but not on others?
All planets have gravity, but some planets have more gravity that others. The amout of gravity is based on the size of the planet. Jupiter, for example, has much more gravity than Earth because it is bigger. Planents aren't the only objects that have gravity. Even your pencil has gravity, but it is such an extremly small amout that it really doens't make a difference.
