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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 gravity if mass is 15kg and weight is 126 newtons?

Gravity (acceleration) is equal to Force divided by mass. So, 126 / 15 = 8.4m/s^2

What is the word meaning circle around due to gravity?

The word you're looking for is "orbit." Orbits are the paths that objects take as they are drawn in by gravity around a central body, such as planets orbiting around a star.

Who believed that heavy things fall faster then lighter things?

Everybody did, until Galileo's investigation of the subject roughly 400 years ago.

Among scattered individuals and segments of the population, the belief persists to

this day, and is even occasionally observed among questions posted to this website.

What is the force on a floating object that is equal to the amount of water the object displaces?

You're fishing for the "buoyant force", but the wording of the question is

quite unscientific.

The force on the floating object is not equal to water. It's equal to the

weight of the amount of water that is displaced.

What is detemined by gravity?

Gravity determines the force of attraction between objects with mass. It is responsible for keeping planets in orbit around the sun, causing objects to fall when dropped, and influencing the weight of an object based on its mass and proximity to other massive bodies.

How can you overcome gravity by leaving earth?

To overcome gravity and leave Earth, you need to achieve escape velocity. This is the speed at which an object must travel to break free from a planet's gravitational pull without any further propulsion. Once you reach escape velocity, you can travel away from Earth and venture into space.

How gravity give us weight?

The weight of a body depends on the gravitational force exerted by the earth on a body for every object ther are two forces acting on them its either contact force or force field the principle of how gravity exerts weight on a body occurs mostly in both forces,it would be observed that a body(wheel barrow) place in different countries counting two mass(two kegs) when lifted their weight will be different when measured this is as a result of the % of gravitational force contained in each countries

Does gravity work horizontally?

Only if the earth is on a bilaterally retrograde plane to the rotation of the moon. This is more common in northern areas such as Scandinavia or the Hebrides. Bjork has written no fewer than three songs about horizontal gravity episodes, having experienced severe damage to her vocal cords while asleep as a child during one such episode.

Why a stone drowns in a sea whereas a ship do not?

A stone sinks in water due to its density being higher than that of water. On the other hand, a ship is designed to displace enough water to create buoyancy, keeping it afloat. The ship's shape, size, and material all contribute to its ability to float on water.

What was gravity destroyer's special move on beyblade?

Gravity Destroyer's special move was called "Black Excalibur." It was a powerful attack where the beyblade would spin rapidly while releasing a dark energy wave to strike the opponent's beyblade.

What is the relationship between base of support and line of gravity?

The base of support is the area beneath an object or person that sustains their weight. The line of gravity is an imaginary line passing through the center of gravity of an object or person. The relationship between the two is that a wider base of support provides more stability because it allows for better alignment with the line of gravity, reducing the risk of tipping or falling over.

What factors affect the acceleration due to gravity on a planet and how?

By far the most significant factor is the mass of the planet, thus, primarily effects which alter mass would be those which affect the gravitational field. There are some relativistic effects which can affect mass or gravity such as speeds approaching that of light, and also spin which can alter the radial component of the gravitational field, through the frame dragging effect (usually explained through general relativity's description of gravitation as a curvature of spacetime).

Friction and gravity always a hindrance?

Friction and gravity are physical forces that can act as hindrances in various situations. Friction resists the relative motion of surfaces in contact, while gravity pulls objects downward. These forces can make it more difficult to move objects, slow them down, or keep them grounded.

What happen when the downward pull of gravity on an object is equal to the upward force of water?

When the downward pull of gravity on an object is equal to the upward force of water (buoyancy), the object will float at a certain level in the water. This is known as the object being in equilibrium, where the forces are balanced and there is no net force acting on the object.

How do the planets stay in orbit and not crash into the sun due to its gravitational pull?

When dealing with the distances and times you are referencing they will eventually go back together. The time is in billions of years.
The whole idea of expansion and shrinkage of the universe is in play here.

Is walking is the work against gravity?

Walking across the room is not work against gravity.

Walking up the stairs is work against gravity.

Walking down the stairs is work with gravity.

Why all objects travel at the same velocity?

All objects do not necessarily travel at the same velocity. The velocity of an object depends on factors such as its mass, the force acting on it, and any external influences like friction. In a vacuum, objects of different masses would fall at the same rate due to gravity acting uniformly on all objects.

What is the specific gravity of caustic soda liquor 20 percent?

The specific gravity of caustic soda liquor at 20% concentration is approximately 1.125.

What happens if center of gravity is outside the body?

If the center of gravity is outside the body, it can lead to instability and difficulty maintaining balance. This can increase the risk of falling or toppling over. To prevent this, it's important to ensure proper posture and alignment to keep the center of gravity within the body's base of support.

Does gravity have an effect on objects of different sizes?

Yes, gravity affects objects of different sizes in the same way. It depends on the mass of the objects and the distance between them. All objects are attracted to each other by gravity, following the universal law of gravitation.

How does gravity conform to the bending of the space time fabric?

I'll use one of the favourite analogies, I think this is from a popular science book by Kaku(I'm not sure, maybe someone can help tell if I'm right about the author). Imagine a 2 dimensional worm crawling on a piece of paper. If we crumple a paper and then put the worm on it, it will move sideways as if it is experiencing a force, this is because it can't see the third dimension(height), hence it can't percieve the crumpled paper. All it sees is that it changes direction as if a force is acting on it, whereas in reality it's the folds on the paper that is the culprit! Similarly, gravity is bending of the spacetime fabric that's 4 dimensional, which we percieve as a force in 3 dimensions.

When is gravity not so helpful?

Gravity is not so helpful in situations where we require objects or people to remain weightless, such as during space travel or when performing certain experiments in physics. Additionally, gravity can be a hindrance in activities like rocket launches or when trying to achieve a stable orbit around a celestial body.

What is the specific gravity of sodium hydroxide?

What is the pH of sodium hydroxide?

What I determined from a wide range pH paper is that the pH of a .1 M solution of sodium hydroxide was that between 11 and 12.

How does increasing mas affect gravity?

Gravity has no effect on mass, and mass has no effect on gravity. The characteristic

behavior of gravity is that the force between two masses is directly proportional to

the product of the masses, so if one or both masses were to increase, the mutual

gravitational forces between them would increase in proportion to the increase in

the product. That happens regardless of what the starting or ending mass happens

to be, because mass has no effect on gravity.

What would happen to a rock in the garden if no forces were ever applied to it?

If no forces are applied to the rock, it would remain in a state of rest, potentially being subject to other natural forces like wind or erosion. Over time, it may undergo changes due to weathering and geological processes, but it would generally stay in place as long as no external forces act upon it.