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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

Why is the acceleration due to gravity the same for every object?

Gravity is a constant value, and therefore is not dependent on the extrinsic properties of an object.

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Very nice.

-- The more mass in an object, the more gravitational force draws it towards the Earth.

-- But the more mass it has, the more force it takes to accelerate it at any rate you name.

-- So the more gravitational force there is pulling it down, the more force it takes to accelerate it.

-- Those conditions work exactly against each other, so that every mass falls with the same acceleration.

Is friction a type of gravity?

No, friction is not a type of gravity. Gravity is the force that attracts two objects toward each other, while friction is the force that resists motion when two surfaces are in contact with each other. Both are separate physical phenomena with different causes and effects.

How do you beat level 12 on gravity grid?

In order to beat level 12 on Gravity Grid, you need to strategically position the blocks to create a path for the ball to reach the end point. Pay attention to the orientation of the blocks and use trial and error to find the correct arrangement. Focus on utilizing the gravitational pull to guide the ball through the obstacles.

Why do you neglect gravitational forces exerted on a falling stone by nearby trees while calculating its acceleration?

Mainly because those forces are so much much much much tinier than the gravitational

forces between the stone and the Earth.

But if you want to be technically precise about it, it's also because any other thing besides

the Earth creates a gravitational force on the stone that's not vertical, so it has even less

effect on the vertical acceleration than it might otherwise have, even with its pathetically

almost negligible mass.

What is the charge in gravity?

Gravity does not have a 'charge'. It is, however, always attractive and never repulsive.

What do changes in the color of the patients urine generally indicate about changes in its specific gravity?

Changes in the color of a patient's urine can indicate changes in hydration levels, diet, or the presence of certain medical conditions. However, changes in color alone do not necessarily provide information about changes in specific gravity, which is a measure of urine concentration. Specific gravity depends on the amount of solutes in urine, not just its color.

How artificial gravity is produced?

Through acceleration.

Gravity and acceleration are equivalent: they're each associated with a force that's proportional to the mass of the object. Amusement parks take advantage of this in "virtual reality" theaters: they simulate acceleration with gravity, by rocking the seats backward or forward to simulate speeding up or slowing down. Artificial gravity in space is the converse: simulating gravity with acceleration.

Acceleration can be linear or centripetal.

Continuous linear acceleration requires continuous energy input. The kinetic energy is proportional to the velocity squared. It's prohibitively expensive and doesn't allow you to stay any place for very long -- including near-earth orbit.

Centripetal acceleration is acceleration toward a center point -- it changes the direction of motion but not the tangential speed. Everything that rotates experiences "artificial gravity." That's why curves in roads -- especially high-speed race tracks -- have to be banked. For an object spinning in space without friction, it takes energy to start and stop the rotation, but it doesn't take any energy to sustain a constant rotation. Conservation of momentum keeps the object spinning. Constant centripetal acceleration (through rotation) is much more sustainable than constant linear acceleration, and it also allows the spinning thing to remain in orbit around the Earth or Sun or other planet.

You can find an artificial-gravity calculator on-line at: http://www.artificial-gravity.com/sw/SpinCalc/

You can find more information at: http://www.artificial-gravity.com/

What things affects the gravity you feel?

The gravity you feel is primarily affected by your distance from the center of a massive object, such as Earth. Gravity is weaker at higher altitudes and stronger closer to the surface due to the distribution of mass. Factors like the mass of the object and your own mass also play a role in determining the gravity you experience.

Do gravity change with mass of objects?

No. Gravity always behaves predictably, according to the same formula,

no matter what happens to the mass of objects.

However, the forces that gravity creates between objects do depend on

the masses of the objects, and if the mass of either object changes, then

the forces between them change.

Is there less gravity at a higher height?

Yes. Gravity drops off at the square of the distance. So the further you are from something the less the force of gravity you experience.

What dictates gravity density or size?

The force of gravity is determined by (a) the masses involved, and (b) the distance between the masses. Of course, in the case of a planet for example, you can determine the mass if you know its average density and its size. Note that for a homogeneous sphere, the force of gravity on an object outside the planet is the same as if all mass were concentrated in the center.

How does gravity keep you strong?

It greatens your resistance to the pulling force of the Earth, with causes muscle cells to grow in size.

This is made evident by low gravity situations on spacecraft; the low resistance causes the people to lower in muscle mass, therefore constant exercise is needed to maintain ones' own body.

What is measure of the force of gravity acting on an object?

equation for total acceleration (ta) between two objects:

ta = (G*(m1+m2))/d^2

G= 6.67*10^-11

m1= mass , object 1

m2= mass , object 2

d = distance

the acceleration is shared, in ratio proportional to masses, example:

if mass 1 = 100 kg and mass 2 = 10 kg then total = 110 kg

a(mass 1) = ta * 100/110

a(mass 2) = ta * 10/110

the greater mass causes the greater acceleration in the other object

(adding the following)

above should read:

a(mass 1) = ta * 10/110

a(mass 2) = ta * 100/110

if the distance is say 0.5 metres, the the total acceleration is 2.936*10^-8

then the acceleration on the 10 kg mass = 2.669 * 10^-8 (m/s)/s

so f= ma

so f =2.669 * 10^-7 newtons

then the acceleration on the 100kg mass = 0.2669 * 10^-8 (m/s)/s

so f= m*a

so f = 2.669 * 10^-7 newtons

there's a quicker way of doing the whole thing:

use f= (G * m1 * m2)/ d^2

same masses and distance

f = 2.669 * 10^-7 newtons

sorry about that

What does change gravity 30 times in a single run mean in Jetpack Joyride?

In order to do this, you must wear the Gravity Suit. While bein in the suit, in order for you to use it, you change gravity by simply tapping the screen. Do this 30 times, and you completed the acheivement.

What is Jupiter's surface gravity strength?

Jupiter's surface gravity strength is about 24.79 m/s², which is 2.53 times the strength of Earth's surface gravity. This means that an object on Jupiter's surface would weigh 2.53 times more than it would on Earth.

What episode of Gravity Falls is slender man in?

The picture is fake sadly so Slender Man was not on Gravity Falls.

Who plays Dipper in Gravity Falls?

Jason Ritter voices dipper and a women named Kristen voices his sister Mabel. I don't know her last name

What is the vertical velocity to reach 500 meter height?

If you mean that you throw the ball or the rock vertically and it gets no more boost

after that, then the required vertical launch speed is 99 meters per second.

Check:

-- Time for speed to dwindle to zero is 99/9.8 seconds .

-- Average speed during that time is 99/2 .

-- Distance = (average speed) x (time) = (99/2) x (99/9.8) = 500.051 meters. Close enough!

What is the graavitaional force between a mass of 120kg and 100kg that are 3 meters apart?

The gravitational force between two masses is

F = G M1 M2/R2

'F' = the force

'G' = the universal gravitational constant

'M1' = the mass of one mass

'M2' = the mass of the other mass

'R' = the distance between the centers of mass of the two masses

In SI units, G = 6.672 x 10-11 Newton-meter2 per kilogram2

F = (6.672 x 10-11) x (120) x (100) / 9 = 8.896 x 10-8 Newton

That's about 0.000 000 32 ounce of force.

Why we don't feel gravitational force?

We do feel gravitational force if that force is not nullified by another force. But for an equal supporting force, we will be moving toward the center of earth and in that case, we will feel the gravitational force.

While lifting an object up , we feel the gravitational force.

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Another thought:

We don't feel anything that is constant and never-changing.

We only feel things when they change.

Another example is: Velocity, or speed and direction of motion.

You can relax quite peacefully, and even nod off, in a passenger jet

cruising at 500 miles per hour, 7 miles above the ground. You're

reminded of your situation only when the aircraft turns, speeds up,

or slows down. (And not even so much in a bank and turn if they're

well coordinated.)

Another example: A modern, high-speed elevator (a lift).

You feel little or nothing during the high-speed 'cruise' portion

of the journey, but you become aware of the motion during the

acceleration phases, at the beginning and end of a long transfer.

What is the meaning of the proverb unwanted egotism prophesies the speedy effect of the force to gravity?

This proverb likely means that when someone's pride and ego are not desired or welcome, the natural consequence will be a swift and inevitable fall from grace or downfall, similar to how objects are quickly pulled down by the force of gravity. It serves as a warning against arrogance and self-centered behavior.

What is a rough estimate of the average terminal velocity of a cargo plane assuming only acceleration due to gravity?

Assuming that it's flown well, the terminal velocity is just about the stall speed of the aircraft - between 80 and 150 mph.

If it's just falling out of the sky then it may exceed mach (aprox 750 mph).

What is gravity formula?

F = G M1 M2/R2

F = force of gravity between two masses (vector)

G = universal gravitational constant

M1 = mass of one of the two masses

M2 = mass of the other mass

R = distance between the two masses' centers of mass (vector)

Who voices uncle Stan on gravity falls?

Alex Hirsch the person who created Gravity Falls.

Does mars have a strong gravitational force?

The acceleration of gravity on the surface of Mars, and therefore the weight

of objects located there, is about 38% of the corresponding number on the

surface of the Earth, and about 2.3 times the corresponding number on the

surface of the Moon. You're free to describe those numbers using any slippery

ambiguous adjectives you like.