Is that the bigger the planet is the more gravity it has?

Answer 1

Yes and no. The greater the amount of matter something has, the more gravitational force it will generate. One must also take into account the density of the planet. Density being calculated as mass per unit of volume. So, even a planet slightly bigger than the earth, but the composition of a gaseous planet, like what Neptune is, it would not create more gravity since it was less dense and had less matter in it. It just so happens that the gas giants in our solar system are so enormously larger than earth that they have enough matter to create a stonger gravitational force. But, not what one would think. For example, Jupiter is a few thousand times bigger than earth, but only has just over twice its gravitational force. Why? Because Jupiter is not as dense as earth is. In fact, if you could put another gas giant, Saturn, here on earth and disregard its gravity, it would float on the ocean.

And, you cannot say the "heavier" the planet is, the more gravity it creates. An object's heaviness is a result of the gravity well it is in, it's gravity is a result of its mass which is always constant.

Answer 2

Well, for the most part. But it's really the more MASS the planet has, the more gravity it has. What's the difference? Uranus is waaaaaaay bigger than the Earth, but a hundred-pound person on Earth would weigh 90 pounds on Uranus. Why? Because it's less dense-waaaay less dense than Earth is.

It depends on the density AND the size of the planet, really. If it's not very dense but extremely massive, then it will probably have more gravity. If it's small like the Moon and very dense, it will have less gravity than say, Saturn (which isn't very dense but it's very big so that makes up for it... Saturn as a whole is less dense than water).

Hope this helps. :)

Answer 3

At an prolonged distance, the gravity is proportional to the mass of the planet. although, on the planet's floor, the gravity relies upon very plenty in the worldwide's density to boot. it is why, working example, Uranus has a decrease floor gravity than the Earth inspite of being larger and extra huge.

Answer 4

The more mass an object has, the greater the gravitational field of the object.

Bigger doesn't have to mean more massive - you could have a big object made up of feathers, and a much smaller object made of steel - the smaller object would be more massive and therefore have a greater gravitational influence.

In our solar system, the larger (in size) planets also have more mass, so the largest planet (in size) is also the most massive planet (Jupiter).

Answer 5

It is not correct.The value of acceleration due to gravity(g), depends upon the mass and radius of the planet and is given by,
g=GM∕r² where M is the mass and r is the radius and G is a constant.
So,if mass increases the gravity will increase and if the radius increases, the gravity will decrease.

Answer 6

not necessarily. gravity depends on mass, which isn't really the size, its the amount of stuff in an object. so a planet could be half the size of earth, but have three times the mass, and it would have a stronger gravitational pull.

Answer 7

Yes. The bigger the planet, the stronger it's gravity is.

Answer 8

Not necessarily, the one with the greater mass will have the greater gravity.