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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

What is the direction of the force of gravity?

The force of gravity acts towards the center of mass of the object in question.

How do you find specific gravity of fly ash?

To find the specific gravity of fly ash, first weigh a sample of fly ash. Then, divide this weight by the weight of an equal volume of water. The result will give you the specific gravity of the fly ash.

How do you move a car without using gravity or electricity?

One way to move a car without gravity or electricity is to push or pull it manually. Another option is to use a mechanical device like a car jack or a lever system to lift and move the car. In some cases, a tow truck or other external force can also be used to move the vehicle.

Does force of gravity act on dust particles?

Yes, the force of gravity acts on all objects with mass, including dust particles. Gravity pulls objects towards the center of the Earth, causing dust particles to fall to the ground if they are not suspended in air or other mediums.

Why metals have high specific gravity?

Metals have high specific gravity due to their relatively high atomic mass and close packing of atoms in their crystal lattice structures. This results in a high density, making metals heavier compared to non-metals or other materials.

How much work can a 5 kg mass do if it is 6 m above the ground?


Its gravitational potential energy is (mass) x (gravity) x (height) = (5 x 9.8 x 6) = 294 joules.
That's the amount of work that gravity will do to that mass in pulling it to the ground, and
if you couple it to something else by some suitable mechanical arrangement, you can re-direct
a large part of that gravitational energy to accomplish some useful task for you.

(I say "a large part of that ... energy" rather than all of it, because no mechanical
arrangement is going to be 100% efficient, and some of the energy is going to be
lost in the levers and gears.)

Before we leave the subject, it's worth considering where that energy came from ...
how it got packed into the 5kg mass in the first place. It turns out that the 294 joules
is the work that YOU had to do, against gravity, to raise that 5kg up 6 m off the ground.
So if the task you need done involves some time flexibility, you might just as well use
your own work and energy to do the task directly and get it over with, because you're
going to lose a good bit of it in the process of lifting the 5kg and then using the fall of
the 5kg to do the task. In our real world, moving energy from one place to another,
or changing it from one form to another for storage, ALWAYS incurs some loss.

In what situations might drag act on the force of gravity?

Drag refers to air resistance. Drag and gravity balance each other at terminal velocity when falling.

What kind of force is the force of gravity?

The force of gravity is a non-contact force that attracts objects towards each other. It is a fundamental force of nature that acts on all objects with mass, and its strength is determined by the masses of the objects and the distance between them.

Why istn't the center of gravity of the meterstick necessarily at exactly the 0.05m mark?

The center of gravity of an object is where its weight can be considered to act. For a meterstick, the center of gravity is affected by the distribution of its mass along its length. If the meterstick is not uniform in density or has additional mass attached, its center of gravity may not align exactly with the 0.05m mark.

What is an explanation of How mass affects gravity?

Mass is directly proportional to gravity according to Newton's law of universal gravitation. The greater the mass of an object, the stronger its gravitational pull. This means that objects with larger mass will attract each other with a greater force due to gravity.

What can Gravity can be compared to?

Gravity can be compared to a magnet pulling objects towards each other. Just like how a magnet attracts metal objects, gravity pulls objects with mass towards each other. Additionally, gravity can also be compared to a rubber sheet being stretched by heavy objects placed on it, causing lighter objects to roll towards the heavier ones.

How does gravity change with density?

Gravity increases as density increases. This is because more mass contained within a smaller volume means there is greater gravitational force acting on objects near the dense mass. Gravity is directly proportional to the density of an object.

Is bill cipher from gravity falls real?

yes and no cause bill cypher is a iluminaties and illuminaties are real

Why would knowledge about the center of gravity be important to designers?

Understanding the center of gravity helps designers ensure the stability and balance of their designs. By locating the center of gravity, designers can make adjustments to prevent tipping or leaning, which is crucial for products like vehicles, buildings, and furniture to function safely and effectively.

How would changing the location of the center of gravity of a structure affect it?

Changing the location of the center of gravity of a structure can impact its stability and balance. Moving the center of gravity higher can make the structure more prone to tipping over, while moving it lower can increase stability. It is important to carefully consider these changes to ensure the safety and functionality of the structure.

How do skiers overcome the force of gravity to have another go?

Skiers use a combination of techniques such as momentum, balance, and body positioning to navigate the ski slope and ride up the lift to have another go down the mountain. By leveraging these elements effectively, skiers can counteract the force of gravity and enjoy multiple runs in a skiing session.

How does the gravitational force between two object's change if the mass of one of the objects is doubled?

If the mass of one object is doubled, the gravitational force between the two objects will also double. This is because gravitational force is directly proportional to the product of the masses of the objects.

What is specific gravity of ethylene oxide?

The specific gravity of ethylene oxide is approximately 0.887 at 68°F (20°C).

Does the horizontal velocity of a ball affect how fast it falls?

No. The force depends only on the height of the ball and on the mass of the ball. The force due to the earth's gravitional field varies inversly with the distance from the center of the earth to the center of the ball.

If gravity is the only force present?

If gravity is the only force present, objects will accelerate towards each other based on their masses and the distance between them. This can lead to attractions between objects in the universe, such as planets orbiting around stars. Without other forces to counteract gravity, objects will continue to move towards each other until collision.

How does newtons second law related to gravity?

Newton's second law of motion states that the force acting on an object is equal to the object's mass multiplied by its acceleration (force = mass x acceleration). In the case of gravity, the force of gravity acting on an object is directly proportional to the object's mass. This means that the force of gravity on an object is equal to the object's mass multiplied by the acceleration due to gravity.

How does gravity affect your blood?

Gravity affects the circulation of blood in your body by helping to return blood from your lower extremities back to your heart. When you stand upright, gravity pulls blood downwards, making it harder for your heart to pump blood against gravity. This can lead to higher blood pressure in your lower extremities and can contribute to conditions like varicose veins.

What does mass inertia and gravity all related give examples?

Mass, inertia, and gravity are all related to the concept of gravity. Mass refers to the amount of matter in an object, which determines the strength of its gravitational pull. Inertia is the resistance of an object to changes in its state of motion, which is also influenced by mass. Gravity is the force of attraction between objects with mass, causing them to be pulled towards each other. An example of how these concepts are related is when an object with more mass has a greater gravitational pull, making it more difficult to move due to its inertia.