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Gravity

One of the four fundamental interactions, gravity is responsible for the fact that any objects with mass attract one another. According to general relativity, it is a space time curvature, but according to quantum mechanics it is the result of exchanges of virtual gravitons.

4,784 Questions

Where can you find gravity?

In a word -- everywhere.

If the distance from you to any other mass in the universe is less than infinite,
then there is a gravitational force between you and something else, drawing
the two of you toward each other.

Center of gravity on a rocket?

The center of gravity on a rocket is the point where all the weight of the rocket can be considered to act. It is an important parameter that must be carefully controlled during design to ensure stability during flight. The center of gravity should be located ahead of the center of pressure to keep the rocket flying straight.

How did they discover gravity?

Isaac Newton is credited with the discovery of gravity in the late 17th century. He formulated the law of universal gravitation, which states that every object in the universe attracts every other object with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

What kind fo friction will a car skidding on an icy road show?

A car skidding on an icy road will exhibit kinetic friction, which is the force that resists the motion of two surfaces sliding against each other. The low coefficient of friction between the icy road and the car's tires makes it easier for the car to skid.

How does earth's gravity work?

Gravity is an attractive force that is exerted by all matter. Any two objects with mass will be attracted to one another. The greater the mass of the object, the stronger its gravity at any given distance. Most objects do not have enough mass for their gravity to be noticeable, but Earth does, as do all planets. Any object near Earth will be pulled in the direction of Earth's center.

Does Uranus is wearker or stonger gravity then earth?

Gravity is a correlation of mass. Uranus is many times larger than Earth. Therefore, the gravity on Uranus is much stronger than Earth's gravity.

Is there gravity where space shuttles orbit?

A very low level, called microgravity, that's a small fraction of normal gravity. Astronauts feel weightless, by comparison. Space shuttles orbit at a distance of 100-200 miles above the Earth. The shuttle is actually falling toward the Earth all the time, but the speed of its orbit keeps it from falling any closer.

Don't confuse gravity with weight. The Earth's gravity extends to the outer reaches of the Solar System. Earth's gravity is what keeps the satellites which are orbiting the Earth from flying away into space. "Weight" is measure of the local acceleration due to gravity. When a person is in orbit, inside a shuttle, he is falling along with the shuttle at about 17,000 miles per hour. The mass of the shuttle and the mass of the person are attracting each other with 'micro-gravity' which is a million times less than the gravity of the Earth.

What process released the most energy nuclear fusion burning or shrinking due to gravity?

  • in a protostar before fusion ignites, gravity.
  • in a normal star, fusion.
  • in a star at the end of its life when fusion burns out, gravity. This is what drives the final blast of a supernova explosion.

Is hypnotizing bad for you?

Hypnosis is generally safe when conducted by a qualified and experienced professional. However, it is important to choose a skilled practitioner to ensure a positive experience. Hypnosis is often used as a complementary therapy for relaxation, stress reduction, and behavior modification.

What is the gravity strength of Mars?

3.7 N/kg = 3.7 m/s/s OR 3.7 m/s^2 all the same thing.

What is the gravitational force on the moon?

1.623 newtons per kilogram of mass.

That's 16.55% of the gravitational force on Earth.

How did gravity begin?

Gravity is a fundamental force of nature that has existed since the beginning of the universe. It is thought to have originated from the uneven distribution of mass in the early universe, leading to the formation of galaxies, stars, and planets. The theory of general relativity, developed by Albert Einstein, provides a mathematical description of how gravity works.

Where is anti gravity point in the world?

There is no known "anti-gravity" point on Earth. Gravity is a fundamental force that acts uniformly across the planet. Any perception of reduced gravity in specific locations, such as the famous "Gravity Hill" optical illusion, is due to visual or perceptual tricks rather than actual changes in gravity.

What is the distance when the moons gravity becomes 0 or earths gravity takes over?

The gravity never goes to exactly zero. Off in the most distant galaxy we can see, the gravitational force of the Moon (or the Earth, or for that matter you) is not zero. It's immeasurably small, but it's not zero. However, there is a point directly between the Earth and the Moon where the gravity of the two exactly balance each other. At less than this distance from the Moon, the net force is towards the Moon; at more than this distance, the net force is towards the Earth. It is located where the mass of the Earth divided by the distance to Earth squared is equal to the mass of the Moon divided by the distance to the Moon squared. The exact distance of this point from the center of the Moon varies since the distance between the Earth and the Moon is not constant, but it's roughly 10% of the center-to-center distance between the Earth and the Moon.

What are the elements of Gravity?

Every mass attracts every other mass, along a line joining their centers.

The force of attraction between any two masses is proportional to the product of their masses, and inversely proportional to the square of the distance between their centers.

How does a galaxy's gravity affect a planet?

A galaxy's gravity can influence a planet by keeping it in orbit around a central star, like our Sun. The gravitational interactions with other celestial bodies in the galaxy can also affect a planet's orbit and trajectory over long periods of time. Additionally, the overall distribution of mass in a galaxy can influence the movement and behavior of planets within it.

Does gravity change time?

Yes, gravity does affect time. According to Einstein's theory of general relativity, gravitational fields can slow down time. This effect is known as gravitational time dilation, where time runs slower in stronger gravitational fields. It has been experimentally verified, such as with atomic clocks on Earth and in space.

Why any body has gravity?

Gravity is caused by mass which is a property of physical matter. Even hydrogen, the lightest element in the Universe, has mass and is subject to gravity. An interesting question would be why the mass has gravity?

Does gravity affect light?

Yes as explained in the theory of relativity Yes. Light is affected by gravity, but because light travels so fast, the effect is not noticeable under most conditions. As light passes by something with mass its path bends toward the object in what is called gravitational lensing. We have observed this effect around massive galaxies as the light from galaxies behind them is distorted.

How does gravity affect a satellite launch?

Gravity affects a satellite launch by pulling the satellite towards the Earth during its initial phase of ascent. This requires the rocket to generate enough thrust to overcome gravity in order to reach the desired orbit. Once the satellite is in orbit, gravity continues to affect its trajectory, helping to keep it in orbit around the Earth.

How much gravity do you need to kill you?

Earth's gravity kills a great number of people right here on Earth each year. You can be killed in lunar gravity, if you fall down and puncture your space suit or fall off a big enough cliff.

As far as maximum gravity, you can withstand 9-10 gravities for short periods of time, and you can withstand probably 3 Gs for a long while, as long as you are very careful, because in that gravity field, tripping would probably be fatal.

What is the direction of gravity?

The gravitational forces between two objects act in both directions along the line

between their centers of mass.

In our daily experience, where one of the objects is always the Earth, we call one

of those directions "down" and, as relates to the forces of gravity, we ignore the

other direction completely.

Why is there less gravity on the moon than earth?

Gravity is the attraction between masses. And since the moon has less mass than earth, the gravity is weaker there. Over a distance gravity is weaker.

How does gravity cause day and night?

Gravity does not directly cause day and night. Earth's rotation on its axis is what causes day and night. As Earth rotates, different parts of the planet are either facing towards the Sun (daytime) or away from the Sun (nighttime). Gravity is the force that keeps objects, including Earth, in orbit around the Sun.