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The strength of gravity from a given object is directly proportional to the object's mass and inversely proportional to the square of the distance from the center of mass. So, if we double an object's mass the gravity is double. If we triple the mass the gravity is tripled. By contrast if we double the distance we end up with one quarter the gravity. If we triple the distance we end up with only one ninth the gravity.

The formula for the strength of gravity is: g=G*M/r^2

"G" is the Newtonian gravitational constant, "M" is the mass of the object, and "r" is the distance tot he center of mass.

In the case of the surface gravity of a planet, the distance to the center of mass is the planet's radius. So if two planets have the same mass but are of different sizes, the larger planet will actually have weaker surface gravity. In most cases a larger planet will have a greater mass than a smaller one, but not always as planets vary in density. Event if the larger planet is more massive, the larger size can still result in weaker gravity.

A perfect example would be a comparison between Earth and Uranus. Uranus is about 4 times the radius and about 14.5 times the mass of Earth. From these figures we find that the gravity on Uranus is 0.906 times or 90.6% of Earth's surface gravity.

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How are the planets sizes related to their surface gravity?

Planet sizes are directly related to their surface gravity due to their mass and radius. Larger planets typically have greater mass, which increases their gravitational pull. However, if a planet is significantly larger but less dense, its surface gravity may not be as high as expected. Thus, surface gravity is influenced by both the planet's size (radius) and its density (mass per unit volume).


Gravity is greater at the what?

Gravity increases from about 9.780 m/s2 at the Equator to about 9.832 m/s2 at the poles. This means an object will weigh about 0.5% more at the poles than at the Equator.


Does a larger or smaller solid surface dissolve faster?

A smaller solid surface dissolves faster than a larger one because it has a greater surface area relative to its volume. This increased surface area allows more solvent molecules to interact with the solid, facilitating a quicker dissolution process. In contrast, a larger solid has less surface area exposed to the solvent, slowing down the dissolution rate.


What is size of solute?

It is the amount of surface of a solute that is exposed to the solvent. The smaller the pieces of the solute are, the larger the surface area that is exposed to the solvent.


How the size of particles affect the way the particles dissolve?

The smaller the particle the faster it dissolves. This is because the process by which a solute dissolves takes place at the surface of the solvent. That means the larger the surface area of a particle or solute, the faster the solute will dissolve.

Related Questions

Does mercury have a smaller or larger gravity then earth?

Much smaller.


What causes the earth to have gravity?

Earth is hafly big, so it has gravity. Larger, it has more gravity. Smaller, it has less gravity.


How does mass and gravity distance effect gravity?

The larger the mass of an object, the greater the force it will exert on other objects. But as the distance from that object becomes greater, the gravitational pull becomes smaller. For example, the sun has a larger mass than the earth, so gravity on the suns surface would be much greater than on earths surface. Also, as you get further and further away from the earth, the less you are influenced by its gravity.


Is the gravity on mars smaller or larger then earth?

Gravity on Mars is substantially lower than on Earth.


Why planets are of regular in shape while meteors are irregular in shape?

Because of their larger gravity, AND their larger size. Larger gravity will allow smaller hills or other irregularities; larger size means that an irregularity of a certain size will smaller, compared to the size of the planet.


Which has a more powerful gravity a small planet or a large planet?

It would depend on the mass of the planets. The surface gravity of a planet is directly proportional to its mass and inversely proportional to the square of its radius. If two planets have the same mass but different sizes, the smaller planet will have stronger gravity because the surface is closer to the center of mass. Conversely, if two planets are of the same size, the one with more mass will have stronger gravity. Since larger planets usually have more mass than smaller ones they usually have stronger gravity, though not always.


Is a larger or smaller thing easier to balance?

In general, smaller things are usually easier to balance compared to larger things. Larger things have more weight and surface area, making them more challenging to balance due to factors like gravity and instability. Smaller objects have less weight and are easier to control and stabilize, making them simpler to balance.


Does moon europa have gravity?

Yes. Everything has gravity. Larger and denser objects have more gravity than smaller objects that are less dense.


Is mass larger on bidder planets or smaller?

Mass does not change with gravity. Weight increases on BIGGER planets and decreases on smaller planets.


Why do larger objects have more gravity than smaller objects?

Larger objects have more gravity than smaller objects because they have more mass. Gravity is directly proportional to an object's mass - the more mass an object has, the stronger its gravitational pull. This is described by Newton's law of universal gravitation.


Does gravity get bigger or smaller with bigger masses?

Gravity gets stronger with larger masses. The force of gravity is directly proportional to the mass of the objects involved, meaning that the larger the mass, the stronger the gravitational pull between the objects.


How are the planets sizes related to their surface gravity?

Planet sizes are directly related to their surface gravity due to their mass and radius. Larger planets typically have greater mass, which increases their gravitational pull. However, if a planet is significantly larger but less dense, its surface gravity may not be as high as expected. Thus, surface gravity is influenced by both the planet's size (radius) and its density (mass per unit volume).