Gravity

There is no such thing as a zero gravity chamber. The only way to experience weightlessness is in freefall. There are planes that you can board which will go into dives up to 30 seconds long. During these dives the planes are in freefall. Since you are falling at the same rate as the plane is, you will seem to float around the cabin and will feel weightless. It is the same reason that astronauts in orbit are weightless.

Gravity is pretty constant figure anywhere on earth, essentially its dependent on your distance from the center of gravity of the earth, nominally it will produce an acceleration of 9.81((m/s/)/s) at the earths surface. Gravity is dependent on mass and independent of motion , ie mass of earth attracting mass of person , attraction being proportional to total mass of both and distance between their centers of gravity.

However , a very small opposing acceleration outwards is experienced because you are rotating about the earths axis (centrifugal action) , its maximum effect is on the equator and zero effect at the poles.

this acceleration can be calculated from:

a = (v^2)/r where:

a = acceleration ((m/s)/s)

v = velocity (m/s)

r = radius or normal distance from earths axis (m)

Yes, all planets have gravity. Gravity is a force that attracts objects with mass towards each other, so every celestial body with mass, including planets, has its own gravitational pull.

To fully escape Earth's gravitational pull, an object would need to reach a speed of about 25,000 mph or approximately 40,000 km/h. This is known as the escape velocity and is the minimum speed required for an object to break free from Earth's gravity. The distance an object would need to travel to achieve this speed would depend on various factors such as altitude, initial velocity, and atmospheric conditions.

-- Hang the object from at least two different points on it, in turn.

-- During each hanging, draw a line on the object, directly downward, starting

at the point from which it hangs.

-- The object always hangs with its center of gravity directly below the point

from which it hangs. So all such lines pass through the center of gravity, which

is indicated by the point at which two or more such lines intersect.

actually yes, every particle that has mass has gravity, that means every molecule every atom of everything that exists has gravity and the more particles you put together, the higher that gravity is, that's why oxygen stays on earth rather than going out into space

Gravity itself cannot be seen, as it is a force of attraction between objects with mass. However, its effects can be observed, such as objects falling to the ground or planets orbiting around the sun.

gravity zone is the area where gravity exists.

Acceleration due to gravity on Earth is 9.8 m/s2 (9.8 meters per second per second); that is, if you are not standing on something, neglecting air resistance (which creates a 'terminal velocity' and prevents you from falling too fast), your speed falling toward the earth would increase by 9.8 meters per second.

the net force on bodies in stable orbit is nil, the force of gravitational attraction , is balanced by the centripetal force of velocity in a circle.

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example, any orbit radius ( if orbit time not important)

choose your orbit radius, calculate force of gravity, tailor velocity to produce balancing centripital force

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f=((G*m1*m2)/d^2) force of gravity

f = m2 *( v^2/d ) centripetal force

G = newtons constant

m1 = earth mass

m2 = satellite mass

d = orbital distance

Gravity has to do with the amount of mass an object has; not an atmosphere. The bigger the object, the stronger the gravitational pull. That's why people feel lighter on the moon than they do on Earth.

Yes, gravity is present on the moon. However, the gravity on the moon is about 1/6th that of Earth's gravity. This is why objects and people weigh less on the moon compared to Earth.

Yes, Rhea, one of Saturn's moons, has its own gravity. This gravity is weaker than Earth's gravity due to Rhea being smaller and less massive.

If sun's gravity suddenly disappears then the planets will stop to revolve around the sun after some time and this duration is equal to the time taken by the light to reach from sun to other planets.

For e.g. Time taken by earth to stop revolving and flying off in any direction = Time taken by light to earth from sun = 8 min. 20 seconds

Also, planets will start to fly in any direction and they may collapse and in simple words: Solar system will collapse and life will disappear on earth.

It is the nature of the gravitational force to attract things. The moon is in free fall around the Earth, as is the Earth around the Moon. They don't collide because they have significant angular momentum. This causes them to 'miss' each other constantly.

However the Moon is actually receding from Earth. This is because the tidal motion on Earth robs the Moon of energy so its orbit is increasing. At the same time the speed of Earth's rotation is also decreasing. In the end this effect will stabilize with the Moon's period of rotation around the Earth being equal to a day on Earth.

I am not sure what you mean by 'depend' (please try and make your questions clear) but if you mean does the fact that a helium filled balloon will float (or rise) depend on gravity? Then the answer is Yes. if you were to take a helium filled balloon to the space station and release it inside, it would not rise, it would behave just the same as if you released a bunch of keys.

You can typically find physical science previous papers and answers on websites that specialize in educational resources, such as exam preparation websites or academic forums. You can also check with your school or university's library or academic resource center for past papers and model answers. Additionally, reaching out to your professors or teachers for guidance on where to access previous papers can also be helpful.

We would be in really big trouble. Celestial bodies such as the Sun, but also the Earth and Moon are kept intact due to gravity. If gravity would reverse, that is, if matter started to repel each other, our planet would be blown up.

A planet simply could not exist, it would be like trying to build a planet using positively charged particles. They repel each other and you would need some additional (powerful!) force to overcome it.

Luckily it can be shown that any force originating from coordinate invariance, which means that the laws of physics are the same for every observer, which is the case for general relativity, that such a force must be attractive. It simply cannot be repulsive.

Neptune's gravity is strong, as it is the fourth largest planet in our solar system. Its gravitational force is about 17% stronger than Earth's.

The thermosphere at high altitudes has low density of molecules, so there are fewer particles available to absorb and retain heat. Additionally, the few particles that are present in the thermosphere are highly energetic, causing them to quickly lose any absorbed heat through radiation into space.

black holes are believed to have the strongest gravitational pull. that and beaches at spring break.

There is no such thing as 'zero gravity,' as even if you went a million lightyears away from an object, it's gravity would still have a minor affect on you. The only way to feel no gravity from an individual body such as the earth is to be in free fall. This is why the astronauts orbiting the earth dont feel its gravity, as contrary to popular belief, orbiting is actually just free falling at an angle where you constantly miss the object you are orbiting. Hope this helped!

Answer: It keeps up from being crushed from the atmosphere around us... it also keeps us from floating away and helps keep the earth the right temp.

Answer: Gravity keeps the atmosphere around the planet in the first place.

It is the other way round - gravity varies with altitude. In other words, you should consider altitude the independent variable. At a greater altitude, there is less gravitational force. This is explained by the equation - F(g) = G(m1m2)/(r^2) where G = constant, m1 and m2 = mass, F(g) = force due to gravity, and r = distance from center of mass. The altitude difference covered by humans daily (high buildings, hills) makes only a small, probably negligable difference in force due to gravity.

Yes. Rock forms around a larger rock. The mass of the planet increases enough to gain more gravity and crushes the rock around it compacting and smoothing it into a sphere. Also, nothing could exist without gravity.