0
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
Is the gravity more in the pole or in the equator?
THEORETICALLY the answer to your question is yes. Locations at the poles are both closer to the center of the earth and are not accelerated tangentially by the rotation of the planet.
The latitudinal variation results from the fact that the Earth is not round like a ball but is more pancake shaped (it is fatter round the equator - the equatorial bulge at the equator is measured at 26.5 miles (42.72 km), the shape of an 'oblate spheroid'.
This shape is caused by the fact that the Earth is spinning which means 'stuff' at the equator is moving round faster than 'stuff' at the poles and this flings it away form the centre of the Earth. The faster spin at the equator produces an outward centrifugal force which counteracts the Earth's gravity to a small degree, reducing downward acceleration of falling objects. Thus at the equator, this apparent gravity is 0.3% less than actual gravity.
However, things are more complex - if the Earth were an inert sphere of uniform density, you could work out (model) what the gravity aught to be at any point on its surface (this is called the geode). However, if you go out and measure gravity at various points on the Earth, the values you get are different from this theoretical model because the actual strength of Earth's gravity varies with latitude, altitude, local topography and the underlying geology (the density of the rocks below you). These factors can cause a actual gravity reading to far exceed modeled predictions relating to the variation between the equator and the poles.
What is newton's contribution to the law of gravity?
Before Newton, the concept was completely non-existent.
Newton invented the whole idea, gave it the name "gravitation", created the formulas that
give it numbers, invented calculus in order to investigate how gravitation behaves, and
eventually showed ... on paper ... that the whole system he had developed predicts exactly
what we see the moon and all the planets doing in the sky.
The law of gravity says the force experienced is proportional to the product of the two masses and inversely proportional to the square of the distance between them.
Effectively on earth the measurement of the force of gravity on a mass is the weight of the mass.
As an Elephant has more mass than a Cat, it weighs more than the Cat (because the mass of the Earth is constant).
What exerts such a gravitational pull that no electromagnetic radiation can escape?
A black hole exerts such a strong gravitational pull that not even electromagnetic radiation, including visible light, can escape its grasp. The intense gravitational force of a black hole warps spacetime to create a region from which nothing, not even light, can escape.
Why can't gravity be magnetic?
Gravity and magnetism are separate fundamental forces with different properties. Gravity is a force of attraction between objects with mass, while magnetism is a force that acts on objects with magnetic properties. The two forces have different mechanisms and cannot be directly interchanged or equated.
What does gravity equal on earth?
That happens relatively close to Earth, because the Sun has a much stronger gravitational field than Earth.
It's inside the Earth's orbit about 260,000 kilometers from Earth, in the direction of the Sun.
There's a similar place about the same distance from Earth, but outside the Earth's orbit.
The Earth is constantly moving relative to the Sun, so there is no fixed place in space where this happens.
Notice that these places are not the "Lagrangian points". They are a related, but different thing.
I've a feeling this question may indeed be about the Lagrangian points.
In that case the answer is: "at one of the 5 Lagrangian points".
However, the forces balance there only if you include the "centripetal force"
required to keep a small object, at one of these points, in a stable orbit.
A body can escape the gravitational pull of the earth if it is thrown up with a velocity of?
In order for a body to escape the gravitational pull of the Earth, it needs to be thrown up with an initial velocity equal to or greater than the escape velocity of around 11.2 km/s. This velocity allows the object to overcome the gravitational pull of the Earth and continue traveling away from it indefinitely.
An explanation of what gravity is?
When there is enough matter in one place, it pulls other matter towards it.
How gravity affects different types of objects?
gravity affects all object in the same way, as a gravitation attraction between two objects. the only changing factor between objects is the objects mass. the larger the mass, the more gravity acts on it.
the equation for gravity of any two given objects is g = Gm1m2/r^2
that is to say that the gravitational force between two objects of mass 1 and mass 2 is equal to their masses multiplyed by eachother and the gravitational constant G over their distance apart squared. the further two objects are from eachother, the weaker the force is between them.
A. she wears inappropriate clothes for celebrating the new years party
Can you please explain 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 planets in orbit around the sun and objects on Earth from floating off into space.
Where purchase anti Gravity chair?
AmazonBasics Zero Gravity Reclining Lounge Portable Chair, Black: Amazon.in: Home & Kitchen. ... Style: Zero Gravity RecliningColour: BlackVerified Purchase.
What is the acceleration of gravity near the Earth's surface?
The acceleration of gravity near the Earth's surface is approximately 9.81 m/s². This value is commonly denoted as "g" and represents the rate at which objects accelerate toward the Earth when falling freely under gravity.
How gravity affect molecules in mixture?
Gravity influences the settling rate of molecules within a mixture based on their density. Heavier molecules will tend to settle towards the bottom due to gravity, while lighter molecules will rise to the top. This can lead to separation of components in the mixture based on their molecular weight.
How does an asteroid move through space?
Meteors are pieces of rock, ice or other debris from outer space that fall into the earth's atmosphere. Meteorites are the remnants of those objects that manage to make it all the way to the earth's surface without burning up.
How does gravity control the orbital motions of the planets in the solar system?
Each planetary body in the solar system has a gravitational effect on every other planet of the solar system as well as being affected by, and having an effect on, the Sun. Gravitational effects include tides, planet shapes, friction within a body, orbit, tilt, meteorite and asteroid impacts and avoidance of impacts, and atmospheres.
If the center of gravity of an object falls below its support base, it is in stable equilibrium. If the center of gravity falls outside the support base, it is in unstable equilibrium. You can determine the stability by assessing the relationship between the object's center of gravity and its base of support.
How has the human body has adapted to the force of gravity on Earth over time?
The human body has adapted to the force of gravity on Earth through the development of a strong skeletal system to support upright posture, a muscular system that allows for movement and stability, and cardiovascular adjustments to maintain circulation when standing. These adaptations help humans navigate and function effectively in a gravitational environment.
What would happen if you don't preheat the gravity filtration set-up?
If you don't preheat the gravity filtration setup, the solvent may not flow easily through the filter paper, resulting in slower filtration. Additionally, if the solvent is too cold, it may not efficiently dissolve the solute, leading to incomplete filtration. It is generally recommended to preheat to ensure effective and efficient filtration.
What is Specific gravity of titanium?
The specific gravity of titanium is approximately 4.5 – 4.7. This means that titanium is around 4.5 – 4.7 times denser than water at 4°C.
How does weight affect center of gravity?
Weight directly impacts the position of an object's center of gravity. The center of gravity is the point where the weight of an object can be considered to act. As an object's weight increases, the center of gravity shifts towards the heavier end of the object.
The force of gravity between the two objects decreases as they are moved farther apart. This relationship follows the inverse square law, meaning that the force of gravity decreases rapidly as the distance between the objects increases.
Which one is a contact force friction magnetism electricity or gravity?
Friction, magnetism, and electricity are contact forces because they require direct contact between objects to be exerted. Gravity, on the other hand, is a non-contact force that acts over a distance without the need for direct contact between objects.
What is another way to say 'the force due to gravity'?
One way to say "the force due to gravity" is "gravitational force."
Are all accelerations the result of gravity?
No, if you are driving and press the accelerator down to increase the fuel and air mixture & increase RPM then you will accelerate forward for a time before you come stop accelerating and just keep going
