Gravity

Dear Wiki Questioner,

According to Newton's Law of Universal Gravitation:

A=G(m/r^2)

Where A is the acceleration of an object due to gravity

G is the gravitational constant [about 6.67x 10^(-11)m^3kg^(-1)s^(-2)]

m is the mass of the planet [about 6.4x10^23 kg for Mars)

and r is the radius of the planet [about 3.4 x10^6 meters for Mars]

So for Mars, the Acceleration of an object near its surface due to gravity is approximately:

A=6.67x 10^(-11) x 6.4x 10^23 / (3.4x 10^6)^2 meters per second squared

Which comes out to about: 3.7 meters per second squared

Since the acceleration due to gravity of an object on earth's surface is about:

9.8 meters per second squared = one "g"

Mars' gravity is about 38% of earth's gravity or .38g

Gravity was first described by Sir Isaac Newton in the 17th century. Although the term "gravity" itself was not coined by Newton, it was his research and explanations that led to the identification and understanding of this force.

At what speed ? At what distance ? Between what masses ?

The question is lacking in specifications.

But it doesn't really matter, because gravity is a real force,

but centrifugal force is not a real force. So you would have to

say that gravity is stronger.

Callisto, one of Jupiter's moons, has a surface gravity of about 0.126 times that of Earth, or 1.235 m/s². This means that objects on Callisto weigh less than they would on Earth due to the weaker gravitational force.

The larger the object, the more 'space' is displaced, and thus, the greater the gravity. The Moon displaces less 'space' than the Earth, so the Moon has less gravity. The space station displaces very little space AND its' shape does not lend itself to taking advantage of the spacial displacement, so it doesn't result in very much gravity.

Stand in a swimming pool and hold a beach ball under the water: the pressure of the water on the ball is a simulation of gravity. Hold a tennis ball under the water: far less pressure, yes? Now, hold something with the exact same collective mass as the beach ball (lets say one of those 'noodle' things the kids play with) and you'll have far less pressure on it than on the beach ball. Why? It has the same mass as the beach ball, so why isn't there the same amount of pressure (gravity) on it? Because the 'shape' of it does not lend itself to take advantage of the gravitational pressure.

Gravity can, however, be simulated with inertia. If the ship spins... centripical force and all that.

No. Gravitational attraction is a function of the mass of the Earth and the mass of the body being attracted. The mass of the Earth is the same, no matter where one is located. However, the rotation of the Earth does exert centrifugal force upon bodies on the surface, and that force is greatest at the equator, diminishing as one approaches the poles. Centrifugal force would tend to reduce the measured weight (but not the mass or the gravitational attraction) of a body close to the equator.

The Moon is the "prime mover" of the tides. Although the mass of the Sun is ginormous compared to that of the Moon, it is much farther away from the Earth. In addition, the differentialeffect the sun has across the surface of the Earth is much lower. This translates into the Sun having only about 45% of the effect on tides that the Moon has. Use the link below to dig deeper.i love u soooooooo much to whoever reads this (lol)!!!!!!!!!!!!!!!!

I've heard that on Mars, a person's apparent weight would be about one-third of their weight on Earth. So a 180-lbs man would feel as though they are only 60-lbs. Or a 90kg man would feel like they weighed only 30kg.

On the Moon, this is even less, at one-sixth that of Earth. So the 180lbs man would feel like they weighed 30lbs. The 90kg person would feel like they weighed 15kg.

As a rocket takes off, the gravitational attraction remains constant because gravity is a fundamental force that is determined by the mass of the objects and the distance between them. However, as the rocket gains altitude, the force of gravity weakens slightly due to the increase in distance from the center of the Earth, as described by Newton's law of universal gravitation.

if we were to be on uranus the gravity would be 89% of what we get on earth.

Because earth is more massive than the moon. Mass and gravity are positively correlated; the more mass a body has, the stronger its gravity.

1. the earth is larger then the moon and it has electic forces that allow the gravity to be much stronger on the earth then on the moon.

2. the more mass the object has the stronger force of gravity is has

3. if the earth had no gravity there would be no human existence, the moon wouldn't exist and even our plant would exist, the formation of the earth occurred due to the gravitation pull of the magnetic polls on the earth.

Mercury, because it's the smallest if you don't consider Pluto to be a planet.

Were it not for the interaction of the Moon's gravity with the Earth's, it would not be there. Gravity keeps it in its orbit, as it does all celestial bodies. The moon's gravity also affects the Earth, causing the tides and geological stresses.

If the sun's gravity were to suddenly get stronger, it would lead to planets getting pulled closer to the sun, disrupting their orbit and causing potential changes in their climate and ecosystems. The increased gravitational pull could also affect satellites and space missions, requiring adjustments to their trajectories. Additionally, it may impact the stability of the solar system as a whole.

The escape velocity from the Sun at the Earth's distance is about 42.1 km/s. This means that for an object to escape the Sun's gravity at this distance, it would need to travel at that speed. The Earth's orbital speed around the Sun is about 30 km/s, so it is not moving fast enough to escape the Sun's gravity.

No, gravity is a pulling force. It is a fundamental force of attraction that exists between all objects with mass. Gravity is responsible for holding planets in orbit around the sun and for keeping us grounded on Earth.

Not necessarily. While it is true that gravity is an inverse square relationship with distance, making closeness an important factor, mass is also important, so, for example, if two planets were in the vicinity of a spacecraft, gravity would depend on both mass and distance. Yes, distance is a squared factor, but if one planet were very much larger than the other, it could easily win out, even if it were further away.

LONG STORY SHORT: ITS BIG. ((:

Because it has a lot of mass. The more mass, the more gravity.

For a more in depth answer the reason why the sun has so much gravity is because of the density not the mass, mass is different then density, and having so much density in such a small area gives it so much gravity, and if your using this for a science worksheet the sun i composed of about 2 thousand trillion tons of hydrogen and helium.

The gravity of any body affects all other bodies.

In particular the gravity of the Moon creates the tides in bodies of water here on Earth. It also affects our planet's orbit and angle of tilt relative to the plane of its orbit.

Earths gravitational force compared to mars is greater than mars. That means that objects are easily pulled into earth, whereas it is harder to pull objects into mars, because the gravitational pull is less than earth. With that, satellites on earth could easily fly out of orbit while they are orbiting mars because they have more inertia. With that, the gravitational pull isn't strong enough to overcome the inertia.

I'm not sure if it's half or not, probably less, but the only possibility would be Mercury.

True. Mercury is the only one. Gravity on Mercury's surface is 37% of what it is on Earth.

Except for Mars, where it's 38% of its value on Earth. Mercury and Mars are the only ones.

Except for Pluto, where it's 4% of its value on Earth.

The acceleration of gravity at the surface of Mars is approximately 3.7 m/s2. Earth's acceleration is 9.8 m/s2 on average. The force that gravity would exert on an object is dependent on its mass.