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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

If the space station were in a geosynchronous orbit above the earth would the people be weightless?

Yes, people on the space station in a geosynchronous orbit above Earth would still experience microgravity, which can make them feel weightless. This is because they are continuously falling towards Earth due to the balance between their forward motion and the planet's gravitational pull.

Is it because of gravity that meteriods fall to earth?

Only partially. Meteoroids passing near Earth are affected by Earth's gravity, but they are traveling far faster than escape velocity, that gravity is usually insufficient to cause an impact. Rather, meteoroids strike Earth and its atmosphere when their trajectories around the sun intersect that of Earth such that they will pass through the same place at the same time. In the case of a near-miss, Earth's gravity will alter an asteroid's or meteoroid's orbit. In some cases this change can lead to a collision later on.

Does the moon's gravity affect the earth's gravity?

The effects would only combine for an object outside the Earth-Moon system (such as an asteroid). Otherwise, objects near the Earth and Moon will experience gravitational effects from both. The Earth's gravity holds the Moon in its orbit, and the Moon's gravity affects the Earth, notably causing the ocean tides.

How did Earth get gravity?

Gravity on Earth is a fundamental force of nature that arises from the mass of the planet. As all objects with mass exert a gravitational force on each other, the Earth's mass pulls objects towards its center, creating the force of gravity that holds everything on its surface.

Who in vented gravity?

I guess mother nature did. The first mathematical description of gravity came from Sir Isaac Newton, so the modern study of the effects of gravity were initiated by him.

What is the meaning in gravity?

Gravity is the force by which a planet or other body draws objects toward its center. The strength of gravity depends on the mass of the objects and the distance between them. It is responsible for keeping celestial bodies like planets and stars in orbit.

Are particles in a nebula attracted to one another because of gravity?

Yes, particles in a nebula are attracted to one another due to gravity. As the particles come together under the influence of gravity, they can clump together and eventually form stars and planets. This gravitational attraction is an essential process in the formation of celestial objects in space.

What is the center of gravity for a triangular region?

The center of gravity for a triangular region is at the point where the three medians of the triangle intersect. The medians are the line segments that connect each vertex of the triangle to the midpoint of the opposite side. This point is also known as the centroid of the triangle.

Is the force of gravity stronger or weaker on pluto then earth?

Much weaker. Pluto is a dwarf planet and much less massive than earth, so it has lesser granitational force at it's surface.

Why is there no gravity on moon?

The moon does have gravity, but it is much weaker than Earth's gravity. This is because the moon is smaller and less massive than Earth. Astronauts can still walk on the moon because it has enough gravity to keep them on its surface.

How do astronauts train for zero-gravity?

Astronauts train for zero-gravity by using specialized simulators like the Neutral Buoyancy Lab's giant pool, which allows them to practice spacewalks underwater to simulate the weightlessness of space. They also use parabolic flights on aircraft that create brief periods of weightlessness. Additionally, they undergo physical conditioning and strength training to cope with the physical demands of living and working in microgravity.

Why Venus is the same size of earth and the same gravity?

Since Earth and Venus are roughly the same size AND have roughly the same mass,

they have roughly the same gravity. The acceleration of gravity on the surface of

Venus is 90.3% of what it is on Earth's surface.

Where is Center of gravity on a bottle rocket?

The center of gravity of a bottle rocket is typically located towards the nose cone or front of the rocket. This helps stabilize the rocket during flight, ensuring that it flies in a straight trajectory. Placing the center of gravity too far back could cause the rocket to become unstable and veer off course.

How does the line of gravity affect the stability?

If an athletes line of gravity moves outside of his/her base of support then they will no longer be able to maintain that body position. Eg; during a headstand the performers centre of mass must remain between the triangle of the hands and head. If it moves outside of this then the balance will break down.

David Slee (Ilfracombe)

The acceleration due to gravity at the equator?

about 9.795m/s2 but

9.8m/s2 is almost always used.

Note: centripetal acceleration (from the earth's spin) cause apparent gravity to be about 0.3% less than actual gravity (about 9.767m/s2) at the equator

you can find the acceleration of gravity on any planet by the equation:

a=G(M/R2) where 'a' is the acceleration due to gravity, G is the gravitational constant (about .0000000000667), M is the mass of the earth ( or other planet), and R is the radius of the earth (or other planet)

References:

A.P. Physics class

What happens when the outward force of pressure wins out over gravity in an old star?

When the outward force of pressure wins over gravity in an old star, the star will expand and cool, becoming a red giant. This process occurs as the star exhausts its nuclear fuel and transitions to a different phase of stellar evolution.

The ratio of the earths gravity to the suns gravity?

No meaningful comparison is possible without specifying that the distance from both

bodies will be the same at the moment of measurement.

If you measured the acceleration due to gravity (or your weight) some distance from

the sun, and then measured the acceleration due to gravity (or your weight) at the

same distance from the Earth, you would find that the measurement in the vicinity

of the sun is about 332,982 times the corresponding measurement at the Earth. It

doesn't matter what the distance is, as long as both are the same.

The suns gravitational pull causes the earth and other planets to the sun?

Yes, the sun's gravitational pull is what keeps Earth and the other planets in our solar system in orbit around it. This gravitational force is what maintains the planets' paths and prevents them from moving off into space.

What fraction of the moons gravity is the moons gravity?

The moon's gravity is essentially identical to 100% of the moon's gravity,

and results in gravitational forces on its surface that average about 16%

of the corresponding forces on the Earth's surface.

How does plant respond to light and gravity?

Yes gravity does have effect on plants because the stems always goes up on earth and the roots do down. But in space plants don't know which way is up and which way is down due to the lack of gravity. The real question is how can plants tell which way is up and which way is down due to lack of gravity?

How g becomes zero at the centre of earth?

At the center of a sphere, for every dot of mass attracting you toward it, there's

another dot of mass at exactly the same distance from you in exactly the opposite

direction, attracting you toward it and canceling out the first one.

Who is the one who discovered the law of gravity?

The one who discovered the Law Of Gravity is SIR ISAAC NEWTON

Did Al-Khazini and Al-Biruni found the science of gravity?

No, Al-Khazini and Al-Biruni did not found the science of gravity. Gravity as a concept was famously formulated by Isaac Newton in the 17th century through his law of universal gravitation. However, both Al-Khazini and Al-Biruni were influential scholars in the fields of astronomy, mathematics, and physics in the Islamic Golden Age.

Does how fast earth spins effect gravity?

There is no effect to gravity due to earth fast spins because gravity is other thing and spin of earth is different thing. So we could not compare to each other. Gravity is made of mass of earth and spin of earth is due to sun, as earth revolving around the sun.