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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

How acceleration due to gravity value is calculated?

The acceleration of gravity due to a single object is

(Universal gravitational constant) x (Mass of the object)/(distance from the object's center of mass)2

When a diver jumps off a diving board gravity pulls him down to the water what is the reaction force to earths gravity?

While he's in the air, the reaction force is air resistance and when he's in the water the reaction force is upthrust. Hope this helps.

What is the specifik gravity of PUMG 10 ppm?

Specific gravity is a measure of the density of a substance compared to the density of water. PUMG, which stands for polyurethane microgel, is a type of material used in various applications. The specific gravity of PUMG at 10 parts per million (ppm) would depend on the composition and density of the specific formulation being used. Without this specific information, an exact value cannot be provided.

Can you lift anything in zero gravity?

Yes, literally. You can lift anything in zero gravity, because it has no weight.

The more mass it has, the slower it will move, but if you have the time to wait,

you can move anything in any direction by pushing on it with your muscles.

Note, though: You still need something solid to stand on, or against.

What are the gravity laws?

There's really only one gravity law:

F = G M1M2/R2This tells the strength and direction of the gravitational forces between two

objects that have masses M1 and M2 , and are separated by the distance R .

If you have enough geometry and calculus to work with, this one formula gives

you the weight, falling acceleration and falling speed of any object on any planet,

as well as the shapes and periods of orbits, how to put an artificial satellite into

orbit, and the best paths to take when launching a probe to any planet, asteroid,

comet or moon in the solar system.

What is the gravity of the moon Io relative to earth's gravity?

The surface gravity on Io is very low compared to Earth, due to its low mass, around 0.183g or 18.3% of the Earths pull at the surface. this is just a little more than the surface gravity on our own moon, which is about 16.5% of earths pull.

How does gravity affect gases give an example?

Gravity pulls gas to the center of gravity (i.e. the Earth). Less dense gases like helium (in balloons) are displaced by denser gases like oxygen. It also can cause them to be compressed by the gas above, which is what keeps the earths surface pressurized and causes thin air up mountains.

Which area marks the boundary where Earth's atmosphere is constrained by gravity?

The Kármán line, located at an altitude of 100 kilometers (62 miles) above sea level, is often considered the boundary where Earth's atmosphere ends and outer space begins. This is the point at which the atmosphere becomes too thin to support conventional flight and concepts of "air" and "space" lose their distinct meaning.

What is a measure of the force that gravity exerts on an object?

In our daily life on Earth, we call that the object's "weight".

What is Ceres' gravity compared to Earth?

The acceleration of gravity on the surface of the dwarf planet Ceres is listed as

0.27 m/s2. That's 2.75% of its value on Earth. If you weigh 200 pounds on Earth,

then you would weigh 51/2 pounds on Ceres, not counting all the stuff you'd need

to wear just to stay alive there.

How can you make a feather sink in water?

As long as the feather stays all by itself, it will never sink in water, because its density

is much less than the density of water. If you really need to sink it, then you must

tie it to something much more dense, like a rock or a fishing sinker.

Does kites have gravitational force?

Yes, kites are affected by gravitational force just like any other object on Earth. Gravitational force is responsible for keeping the kite grounded when it is not in flight and helping it come back down to Earth when the strings are released.

Why is the acceleration due to gravity on the surface of Mars is about one third the acceleration due to gravity on earths surface?

The acceleration due to gravity is lower on Mars compared to Earth because Mars has less mass than Earth, which means it exerts less gravitational pull. This difference in mass causes Mars to have a weaker gravitational field and therefore a lower acceleration due to gravity.

What two things increases gravity?

1. weight

2. and how far apart it is with another object

Can force become gravity?

No. Gravity is a property of matter that produces force. But there's no way a force is going to 'become' gravity, although a constant linear acceleration would be indistinguishable from gravity.

Why a lack of gravity might cause muscles to weaken?

In a microgravity environment, such as in space, the lack of gravitational force reduces the need for muscles to work against gravity to support the body. This can lead to muscle atrophy and deterioration as they are not being used as much, resulting in muscle weakness. Regular physical exercise is necessary to prevent muscle weakening in such environments.

What are you measuring when you measure the force of gravity on your body?

When measuring the force of gravity on your body, you are determining the gravitational pull that Earth is exerting on you. This force is generally constant at 9.81 m/s^2 and is responsible for keeping you grounded on the planet.

When is the force exerted by gravity stronger?

The force of gravity is stronger when the masses of the objects involved are larger or when the distance between the objects is shorter. This is described by Newton's law of universal gravitation, which states that the force of gravity is proportional to the product of the masses and inversely proportional to the square of the distance between them.

Does gravity affects the amount of lift on an airplanes lift?

Yes, gravity plays a significant role in the amount of lift generated by an airplane. Lift is the force that counters the weight of the aircraft due to gravity. The amount of lift needed to overcome gravity is directly related to the weight of the airplane.

Why you take g as negative in projectile motion?

it depends on what direction you take as the positive axis in a X,Y direction. if you say positive(X) is away from the earth then you would say gravity(g) is pulling the projectile the opposite direction from positive (X). if you say positive (X) is towards the center off the earth than you could say (g) is going with the (X) so g would end up positive.

in summary is depends on how you set up the X,Y axis compared to the problem you are solving.

What is the gravity force on a student with a mass of 45kg?

As always, that's going to depend on where he is. Wherever it is, the forces

of gravity between him and another nearby mass will both be

(45 kg) x (acceleration of gravity in the vicinity of the other mass).

If the other mass is the Earth, then the acceleration of gravity is 9.8 m/s2 ,

and the force, which the student will call his 'weight', is

(45) (9.8) = 441 newtons (99.21pounds / 7stone 1.21pounds)

What is considered a conservative force?

A conservative force is a force that depends only on the current position of an object, and not on the path taken to reach that position. Examples include gravity and spring force. The work done by a conservative force in moving an object between two points is independent of the path taken.

What two ways can you change the gravatational potential engergy of an object?

You can change the gravitational potential energy of an object by altering its height or the strength of the gravitational field it is in. Increasing the height or the strength of the gravitational field will increase the gravitational potential energy, while decreasing either will decrease the gravitational potential energy.

Where can you buy Ultimate Gravity Destroyer Attack?

You can buy Ultimate Gravity Destroyer Attack from online marketplaces like Amazon, eBay, or specialty toy stores that sell Beyblade products. Be sure to verify the authenticity of the product before making a purchase to avoid counterfeit items.