Gravity

Mercury does get affected by the sun's gravity, which keeps it in orbit around the sun. However, the speed at which Mercury orbits the sun, along with its distance from the sun, allows it to maintain a stable orbit rather than being pulled in completely.

Zero gravity can cause muscle atrophy, decrease in bone density, fluid shift to the upper body, and changes in cardiovascular function due to the lack of gravity pulling blood towards the legs. Astronauts in space experience these effects and must exercise regularly to counteract them.

Acceleration due to gravity on Saturn = 11.171 m/s2

(9.807 m/s2 on Earth)

Google Gravity is a fun project from the developers at Mr. Doob that allows users to experience Google's search functionality in a different way. When you search for something in Google Gravity, results will appear as if they are being affected by gravity, causing them to fall and bounce around the screen. It's a playful and interactive way to explore the capabilities of web design and programming.

Yes, there is gravity on the International Space Station (ISS), but it is not due to the station being in Earth's orbit. The sensation of weightlessness experienced by astronauts aboard the ISS is because they are in a state of constant free fall towards Earth, creating the effect of microgravity.

Earth is affected by the moon's gravity. The moon's gravity exerts just as much force on Earth as Earth's gravity does on the moon, but since Earth is far more massive, it undergoes far less acceleration.

Everything with mass or energy experiences gravity, from planets and stars to objects as small as a single atom. Gravity is a fundamental force in the universe that causes objects to be attracted to each other.

While there is no gravity in space, gravity from Earth still affects objects in close proximity. Meteors fall towards Earth due to its gravitational pull. As the meteor enters Earth's atmosphere, it experiences friction which heats it up and causes it to glow, creating a meteor trail.

value of acceleration due to gravity is maximum at the surface of earth. So the gravitational field strength.

as g'=g(1-d/R)

at surface d=R

so d=R

so g'=g

at earth's centre g=0. Its value decrease with decrease or increase in height.

as:

g'=g(1-2h/R) ......for height h

and

g'=g(1-d/R) .....for depth d

Stems grow against gravity due to a process called phototropism, where they bend towards light. This phenomenon allows plants to optimize photosynthesis by positioning their leaves to receive more sunlight. Additionally, stems typically grow upwards against gravity to reach for resources such as light and nutrients.

For a single body, the center of gravity (center of mass) must be within the object. It is the single point at which all of an object's mass can be considered to act.

For multiple bodies in a system, the center of mass can fall within a body or anywhere between bodies. The joint center of mass is called the "barycenter."

The force of mutual gravitational attraction between the earth and any other object

pulls the object toward the center of the earth, and pulls the earth toward the center

of the object. Both pulls have equal strength.

The force of gravity between two bodies decreases when the distance between them is increased. This relationship follows an inverse square law, meaning that the force of gravity is inversely proportional to the square of the distance between the bodies. Therefore, if the distance is increased by a factor of 4, the force of gravity will decrease by a factor of 16.

Modulating gravity waves is currently beyond our technological capabilities, as gravity waves are extremely weak and difficult to manipulate. These waves are produced by massive cosmic events such as colliding black holes or neutron stars, and detecting them requires highly advanced equipment like LIGO (Laser Interferometer Gravitational-Wave Observatory).

Kepler's laws of planetary motion, which he formulated in the early 17th century, described the motion of planets around the sun but did not involve a formal understanding of gravity. Newton's law of universal gravitation, developed in the late 17th century, provided a theoretical explanation for Kepler's laws based on the force of gravity between masses. So Kepler did not believe in the same laws of gravity as Newton, but Newton's work built upon Kepler's observations.

Gravity is a fundamental force that governs the motion of objects in the universe. It causes celestial bodies like planets, stars, and galaxies to attract and interact with each other, creating orbits and shaping the structure of the universe. Gravity also plays a key role in the formation of structures like galaxies and galaxy clusters.

Because fifty years of secret human and animal experimentation, in laboratories,

under water, and in space, have led to the inescapable conclusion, with which

there are no longer any dissenters, that human astronauts are more productive,

more alert, more efficient, and generally happier, and last significantly longer into

the mission, when they're able to breathe, and the resources to do so are provided.

Yes, gravity pulls all objects towards Earth's center, regardless of their density. However, denser substances have more mass per unit volume, so they may sink lower in the Earth's crust due to density variations.

The larger the object, the more 'space' is displaced, and thus, the greater the gravity. The Moon displaces less 'space' than the Earth, so the Moon has less gravity. The space station displaces very little space AND its' shape does not lend itself to taking advantage of the spacial displacement, so it doesn't result in very much gravity.

Stand in a swimming pool and hold a beach ball under the water: the pressure of the water on the ball is a simulation of gravity. Hold a tennis ball under the water: far less pressure, yes? Now, hold something with the exact same collective mass as the beach ball (lets say one of those 'noodle' things the kids play with) and you'll have far less pressure on it than on the beach ball. Why? It has the same mass as the beach ball, so why isn't there the same amount of pressure (gravity) on it? Because the 'shape' of it does not lend itself to take advantage of the gravitational pressure.

Gravity can, however, be simulated with inertia. If the ship spins... centripical force and all that.

Yes, scientific evidence, such as redshift measurements of distant galaxies, indicates that the universe is still expanding. This expansion is believed to be accelerating due to dark energy, a mysterious force that counteracts gravity at large distances.

Christina Anne Knight proposes the existence of a short range force ( the antigravitational force) which is limited to sub-planck length distances in her new book. It is this force which establishes the minimum size of a discrete unit of space (and renders the existence of singularities impossible).

This means that current ideas about black hole structure and the structure of the universe at the Big Bang are wrong. More issues relating to this subject are discussed within this book (including how an unstable relationship between the gravitational and antigravitational forces is responsible for the perpetual cyclic expansion and contraction of the universe and for the evolution of cosmic parameters). In addition, it is this unstable relationship between these oppositional gravitational forces which produces a cosmic thermodynamic gradient which is reduced during the expansion phase of the cosmic cycle (and is responsible for all of the complexity we see around us).

Not always. The force of gravity is given by Newton's Law of Universal Gravitation:

F=(Gm1m2)/r2

So if a planet had twice the mass of the earth, and the same radius, gravity would be twice as strong.

However, if you had a huge planet that weighed the same as the earth (let's say it had a radius 3x greater), then gravity would be 9 times weaker at the surface.

The reason big planets like Jupiter have so much gravity is becuase they have A LOT more mass than the earth does.

Of course there is gravity in Australia. There is gravity everywhere on the planet.

Acceleration due to gravity is less on the Moon compared to Earth because the Moon has less mass than Earth. The force of gravity is directly proportional to the mass of the celestial body, so a smaller mass like the Moon results in weaker gravity. This causes objects to fall more slowly on the Moon than on Earth.