Table of Contents
- 1 Do bigger or smaller planets have more gravity?
- 2 Is gravity greater on smaller planets?
- 3 Why is there more gravity on larger planets?
- 4 Which planet has more gravity?
- 5 How big does a planet have to be to gravity?
- 6 Which planet has the least gravity?
- 7 How can a smaller planet than Earth have a higher surface gravity?
- 8 How is the force of gravity related to size?
- 9 Can a planet have a density higher than iron?
Do bigger or smaller planets have more gravity?
Volume increases as a cube and surface area as a square, so even a slightly bigger planet would have much stronger gravity.
Is gravity greater on smaller planets?
Because the force of gravity depends on both mass and distance, planets that are puffy and less dense have less gravity at their cloud-tops or surfaces, which are far above the bulk of the mass in their interiors. This is why planets like Saturn appear to have less gravity than Neptune, despite Saturn’s greater mass.
Do bigger planets have higher gravity?
The bigger the mass, the stronger the gravity. This is direct and unavoidable. The bigger the size for a given mass, the smaller the gravity, since you are farther from the center of mass (the center of the planet).
Why is there more gravity on larger planets?
Objects with more mass have more gravity. Gravity also gets weaker with distance. So, the closer objects are to each other, the stronger their gravitational pull is. And if you were on a planet with less mass than Earth, you would weigh less than you do here.
Which planet has more gravity?
The gravity on Jupiter is greater than the gravity on Earth because Jupiter is more massive. Although Jupiter is a great deal larger in size, its surface gravity is just 2.4 times that of the surface gravity of Earth.
Which planet has the less gravity?
Actually, Saturn has the lowest density of all the planets in our Solar System, even lower than the density of water.
How big does a planet have to be to gravity?
Given the amount of radioactive stuff left in the solar system today (it’s been draining away for the last 5 billion years) an object needs to have a mass between about 1 x 1023 kg and 3 x 1023 kg (between 0.02 and 0.05 Earths, or around 70 million “Deimoses”), give or take.
Which planet has the least gravity?
Assuming that you are standing on the surface of the planet, Mercury, with a mass of 3.285 × 10^23 kg, has the lowest gravity.
Why do some planets have higher gravity?
Anything that has mass produces a gravitational field. “Giant planets,” as their name implies, have a lot of mass, and, hence, have a big gravitational tug. Saturn has a core of 10 to 20 Earth masses; Jupiter’s core is at most 15 Earth masses — although it might have no core at all.
How can a smaller planet than Earth have a higher surface gravity?
Therefore, if you want a smaller planet than Earth to have higher surface gravity, you’re going to need it to have higher density. One way to achieve that might be to have a proportionally larger core than the Earth’s, or denser crust. But I’ve no idea how feasible that would be.
Force due to gravity is directly proportional to density of the planet. F = Gxmx(Density)xRadiusx4xpi/3 or GMm/RadiusxRadius 1.SO if a planet of less size but farm more density and a larger planet with a very very less density are taken,…
Can a small planet have a bigger gravity than a black hole?
You have to do the math with actual values, but in general, yes small planets can have bigger gravity if they are denser. Dwarf stars, for example, do that, and black holes which can be just a few kilometers in diameter can do that.
Can a planet have a density higher than iron?
It is unlikely for a natural planet to have a density significantly higher than iron. Barring some outside force elements lighter than iron will be more common than elements heavier than iron. A collision of two planets might work. The collision could separate a part of a core from the rest of the mass, probably into a moon.