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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 Newton's derivation of Kepler's third law an example of?

Newton's derivation of Kepler's third law is an example of how theoretical physics can be used to explain and validate empirical observations. By applying his law of universal gravitation to Kepler's laws of planetary motion, Newton was able to mathematically derive Kepler's third law, providing a more fundamental understanding of the relationship between a planet's orbital period and its distance from the sun.

Why do the Moon's gravity have a greater effect on earths ocean tides than the suns gravity?

Even though the suns gravitational pull is stronger than the moons and does infact effect the tides slightly, the moon is close enough to pull the tides more than the sun. Its all distance related.

What if there was gravity in space?

If there was gravity in space, objects would be pulled towards each other, affecting their motion and orbits. This could lead to different interactions between celestial bodies and potentially alter the dynamics of the universe as we know it.

What is gravity destroyer's special move?

Gravity Destroyer's special move is called the "Black Excalibur." This move allows Gravity Destroyer to unleash a powerful spinning attack, using its weight and momentum to overpower its opponent. It is known for its destructive force and ability to knock out or destabilize opposing Beyblades.

How old is gravitity?

Gravitity presumably appeared at the instant of the Big Bang, along with

all the other laws of Nature and Physics. So it's about 14 billion years old.

Does moon has a gravity?

Yes, the moon has gravity. Its gravity is about 1/6th that of Earth's, which means objects on the moon weigh much less compared to on Earth. This gravitational force is what keeps the moon in orbit around Earth.

Why is there no gravity in outter space?

There is gravity everywhere.

-- The force of gravity that you feel is a force between you and another mass.

The Earth is the "other mass" that we're all used to. If there's no major mass

nearby, then there's no force to feel.

-- Even if there is a major mass nearby, you don't feel the gravitational forces

if you're falling freely toward it. In "outer space", you're falling freely or coasting

most of the time, without running your rocket engines. So even if there is some

mass that you're being attracted to, you don't feel the force, because you're falling

freely toward the mass.

Where did the theory of gravity come from?

Though astronomical observations and theories have been around for thousands of years, the coming together of knowledge that tied down the effects of gravity, is attributed to mainly newton and einstien, though a true explanation of gravity is still elusive.

Is the critical velocity equal to orbital velocity of satellite?

Balance of force of gravity by centripetal force

Yes, for any given orbital radius (r) only one velocity will give stable orbit, this is called the critical velocity.

Pick your orbital radius and satellite mass (m)

Use Gmm / r2 to calculate gravitational force (f),

then find velocity from : v = sq root ( (r * f ) / m)

How did the Apollo 11 overcome gravity?

Apollo 11 overcame Earth's gravity by using a powerful rocket called the Saturn V. The rocket had multiple stages that ignited in sequence to propel the spacecraft into space. Once in space, the spacecraft's speed allowed it to escape Earth's gravitational pull and travel to the Moon.

What has the stronger gravity force between earth than Neptune?

Though Neptune is approx. 17 * mass of earth, its only 1/3 the density, so the acceleration at the surface radius ends up pretty much the same, though slightly greater @ 11 m/s2 compared to earth @ 9.8 m/s2, but if you stood the same distance from both planets, Neptune's gravity would offer a force 17 times greater.

100 kg would weigh 112 kg on Neptune

How is projectile motion related to satellite motion?

Projectile motion and satellite motion both involve an object moving through a gravitational field. However, satellites are in a state of continuous free fall around a celestial body, while projectiles follow a parabolic path with a defined initial velocity and angle. Additionally, satellites have a stable orbit due to their speed and altitude, while projectiles experience a temporary motion before returning to the ground.

Who named the force gravity?

Sir Isaac Newton, the English Mathematician and Physicist who created the

theory of gravity that explained the effects of it that we see around us, called

it "Universal Gravitation".

What are the accommodations of overcoming gravity for humans?

Humans have developed adaptations such as bipedalism, strong musculature, and a well-developed inner ear system to help overcome the force of gravity. These adaptations allow us to walk upright, maintain balance, and resist the pull of gravity on our bodies. Additionally, advancements in technology like transportation and aerospace engineering have provided further means to mitigate the effects of gravity on human activities.

What is gravitys affect on Earths revolution around the sun?

Gravity is the force that keeps Earth in orbit around the Sun. The gravitational pull between the two objects causes Earth to move in a curved path around the Sun, creating the elliptical shape of its orbit. Without gravity, Earth would not be able to stay in its orbit and would drift off into space.

What role did gravity play in forming the sun?

The sun (Sol), like any star, gained so much mass (of mainly hydrogen, with some helium and lithium) that its core began a fusion reaction. Without gravity, it would not have had enough mass, and by extent pressure, to sustain fusion, and therefore would not be a star.

How does the spaceshuttle overcome gravity?

Well, first of all, the last Space Shuttle mission flew in July of 2011, and the shuttles

are all in museums now. (Held there, I'm pretty sure, by gravity.)

When they did fly, the shuttle certainly needed powerful rocket boosters to raise it

above the atmosphere, and accelerate it to a high enough tangential ('sideways')

speed to maintain orbit. But once that job is done, it doesn't take any more work

to stay in orbit. I mean, look at the Moon !

And actually, for that matter, you would not want the shuttle to overcome gravity,

because gravity is what keeps things in orbit.

Is altitude affect to specific gravity and density?

Yes, altitude can affect specific gravity and density due to variations in atmospheric pressure. As altitude increases, atmospheric pressure decreases, leading to a decrease in density and specific gravity of gases and substances. This is important to consider when measuring and calculating these properties at different elevations.

What is the force of gravity at the surface of mars if you were 100 pounds?

100 pounds on earth surface = 37.8 pounds on mars surface

Mass remains the same though.

How does rotation affect the value of gravity at the earth surface?

The (centripital) force due to rotation is at its greatest at the equator, if you weigh 100 kg, the force of gravity on you = approx. 982 n anywhere on earths surface, the centripetal force at the equator = 3.4 n

Who dis covered the law of gravity?

Sir Isaac Newton is credited with discovering the law of gravity. He formulated the law of universal gravitation, which explains the force of gravity acting between all objects in the universe.

What is the source of gravity of moon?

The source of gravity on the Moon is its mass. Gravity is a force that attracts objects with mass towards one another, and the amount of gravity depends on the mass of an object. The Moon's gravity is about 1/6th of Earth's gravity due to its smaller mass.

What is the name of the object that exerts the force on another object?

The object that exerts the force on another object is called the "force" or the "acting force."

Is the gravitational force of earth and moon the same?

No, essentially mass = gravity

the earths mass is roughly 81 * that of the moon, if you stood at the same distance from both, the force on you from the earth would be 81 * that of the moon.