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Absolutely. The two factors that affect gravity are density and volume. For example Jupiter has 11 times the diameter, and 1400 times the volume of Earth, and yet only experiences 2.5 times the gravitational pull of earth. The reason is the density of Jupiter is 1/4 that of Earth.
Wiki User
∙ 13y ago
Wiki User
∙ 6y agoThat depends what you keep constant!If you keep the planet's mass constant, more radius will result in less surface gravity.
If you keep the planet's density constant, more radius will also result in more mass; in total, the surface gravity would increase.
Note: Keeping the density constant seems more realistic, if you just keep adding more of the same material to the planet.
Wiki User
∙ 8y agoA high surface gravity helps to retain a planets atmosphere, preventing gas molecules from escaping into space.
There are other factors too, particularly surface temperature.
Wiki User
∙ 13y agoyes think of the moon if it's small than the grafity is less but jupitor is bigger so that mean it has more grafity
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What does gravity determine?
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.
Why is the acceleration due to gravity on the surface of Mars is about one third the acceleration due to gravity on earths surface?
Because the acceleration of gravity on the surface of any given body depends on the mass of the body and its radius ... the distance of the surface from the center. Mars' mass ... about 11% of Earth's ... and Mars' radius ... about 53% of Earth's ... combine to produce about 38% of Earth's gravitational acceleration at the surface of Mars.
What factors affect the acceleration due to gravity on a planet and how?
By far the most significant factor is the mass of the planet, thus, primarily effects which alter mass would be those which affect the gravitational field. There are some relativistic effects which can affect mass or gravity such as speeds approaching that of light, and also spin which can alter the radial component of the gravitational field, through the frame dragging effect (usually explained through general relativity's description of gravitation as a curvature of spacetime).
What depth from surface of earth is value of acceleration due to gravity one fourth the value at the earth surface?
The force of gravity is proportional to the masses of the two objects and inversely proportional to the square of the distance between them. As a result, a gravity of one fourth that on the surface of the Earth would be observable at an altitude equal to the radius of the Earth, i.e. 6400 km. Note: This is up, in the air, not down, into the Earth. This distance is in outer space.In the other direction, the force of gravity gets smaller as one goes deeper into the earth. This is because the mass outside your current radius (as you descend) does not contribute. The mass inside your current radius is proportional to the cube of the radius. Gravity is proportional to this mass divided by the square of the radius. Therefore, gravity decreases linearly with the radius. So the acceleration of gravity is equal to one fourth its value at the earth's surface at one fourth of the earth's radius, or a depth of approximately 4800 km.
What is acceleration due to gravity on Jupiter?
We can calculate the gravity on any planet or star by using this formula g = GM/r2 where M is mass of the planet or star G is universal gravitational constant g is acceleration due to gravity & r is the radius of the planet or star. Mass of Jupiter is 1.9 X 1027 kg Radius of Jupiter is 7 x 107 m Putting the values in formula we get g = (6.673 x 10-11) x (1.9 x 1027)/(7 x 107)2 = 26m/s2
How does a planet's size affect its gravity?
The distance between a planet and an object affects the gravitational force between them. That means the size of a planet affects the value of the "surface gravity" for that planet. The greater thedistance from the surface to the center of the planet, the smaller the gravity at the surface (for the same planet mass). An example is the fact that Mars and Mercury have almost exactly the same surface gravity. Mars has more mass than Mercury, but this is balancedby the fact that Mercury hasthe smaller radius.
What determines how much gravity on a planet has?
Its mass. More mass=more gravity Also the distance from the planet's center to its surface, i.e. its radius.
Is the pull of gravity from other planets the same as Earth?
No. The gravitational pull at the surface of a planet depends on that planet's mass and radius. Jupiter has the strongest gravity of any planet in the solar system: 2.53 times the surface gravity on Earth. Mercury has the weakest surface gravity at just 37% the gravity on Earth.
What determines how strong the force of gravity is at the surface of each planet?
The weight of an object on the surface of a planet depends on ...-- The mass of the object.-- The mass of the planet.-- The distance between the center of the object and the centerof the planet, i.e. the planet's radius.
Determining How much gravity a planet has?
There's a very definite relationship ... which we can write as a fairly simple mathematicalformula ... between the planet's mass, its radius, and the acceleration of gravity at its surface.
What 2 factors combine to define the amount of gravity that exists on the surface of a planet?
-- The product of the masses of the planet and the object on its surface; -- The distance between their centers of mass ... roughly the planet's radius.
As uranus mass is large then why its gravity is low?
Apart from the mass, you must also consider the distance. In the case of the surface gravity, that would be the radius of the planet.
How does a planet's gravity vary with its mass?
The gravity of a planet is directly proportional to its mass, and inversely proportional to the square of the distance from the center of mass. For the gravity on the surface of the planet, the distance is just the planet's radius. Thus, if a planet has three times the mass, it has three times the gravity. If you are three times as far away, the gravity decreases by a factor of nine.
How does the gravity of mars vary with its mass?
-- If the mass of Mars increases, then its surface gravity also increases. -- If the mass of Mars decreases, then its surface gravity also decreases. -- So long as its radius does not change, the acceleration due to gravity on or near the planet's surface is directly proportional to its mass.
How is the surface gravity of the terrestrial planets related to the type of atmosphere that they have?
The acceleration of gravity at the surface of each terrestrial planet is proportional to the mass of each planet and inversely proportional to the square of the planet's radius, with Newton's gravitational proportionality constant, and is not correlated in any way with any characteristic of the planet's atmosphere. In other words: It ain't related.
How strong is the gravity on Gliese 581c?
If it is a rocky planet with a large iron core, Gliese 581c has a radius approximately 50% larger than that of Earth. Gravity on such a planet's surface would be approximately 2.24 times as strong as on Earth. If Gliese 581 c is an icy and/or watery planet, its radius would be less than 2 times that of Earth, even with a very large outer hydrosphere. Gravity on the surface of such an icy and/or watery planet would be at least 1.25 times as strong as on Earth.
Is there a link to planet size and its gravity?
Yes. To be clear, we have to consider size and mass separately. The gravity of an object increases with greater mass, but decreases with greater distance from the center If two planets have the same mass, but different sizes (meaning they have different densities) then the larger planet will have weaker gravity because the surface is farther from the center. Traditionally, the equation for finding the acceleration due to gravity is: g=G*m/(r^2) where G is a constant calculated to get the correct units, m is the mass in kilograms, and r^2 is the square of the distance from the center of mass as measured in meters. For finding the surface gravity of a planet, us the planet's radius for r. However, you can use a shortcut of this equation by tweaking the units: g=M/(R^2) where M is mass in Earth masses and R is the radius in Earth radii. By plugging in the mass and radius of a planet relative to that of Earth, you get gravity relative to Earth's surface gravity. For example, Jupiter is 318 times the mass of Earth and has about 11.2 times the radius. If we plug that into our equation g=318/(11.2^2)= 318/125.44 = 2.53. So Jupiter's "surface" gravity is about 2.5 times that of Earth.
