I think I just blew my own mind.

For the first one, we wouldn't be sucked off of the planet, but we would be in for a crazy ride. I was recently reading about the possibility of a large object being moved around the earth, which would cause the earth to move only slightly over a long period of time, but scientists do think its possible.

As for the last part, I'm not a doctor but I would think the pressure would definitely kill.

I'm not high though so my perspective isn't cool.

 

I'd be more than willing to put my money on getting "crushed" into a dense ball of human goo... It probably wouldn't be dense though, and would quickly be dispersed throughout the Earth's core only to show up at the surface again billions of years later.

 

^^ I agree. I think it would squash us. I mean it would be like the opposite of what space and 0 gravity is right? 0 gravity means weightlessness, but flip it around to where everything is going inward or caving in, and i think it would just crush the hell out of us...like Ivan Ooze!!!!!

 

In that case wouldnt there be only ONE point somewhere that you could be without getting inwardly crushed? It would have to be the center of the earth where all points would meet and unless your like the terminator or something, your not gonna live there long. So either way you look at it, im pretty sure you would get pwned

 

OK, this is I think it works.

 

If there was a random hollow space in the earth,

You would be crushed. BUT not by the weight on top of you.

The gravity above you wull pull your feet (and your entire body)in the direction of your head,

The gravity below you will pull your head (and your entire body) towards your feet,

and the same for left/ right, front/ back.

so you will be crushed, by being pulled in every direction simultaneously.

The reason this is hypothetical, is that for there to be a hollow space, it would have to resist the pressure around it. Which is why you would be crushed. Because you would be in extremely dense rock.

 

Coming from a physics major....

Yes, the force of gravity is proportional to the mass of the TWO objects. And inversely proportional to the square of the distance between them.

Firstly, becuase of the millions of (relatively extremely strong) gravitational forces all over the universe, there isn't going to be a much larger object just randomly wander close to the earth, and into its gravitational field.

So, to get sucked to the larger mass if it did wander in, we would have to be much closer to the center of gravity of the other object than we are to the center of gravity of the earth even if the other object is much more massive. This is becuase the inverse (distance between the two objects) is squared.

Having a tough time answering the last one.....my guess would have to be weighlessness I suppose. (Since weight is highly variable for one person depending on the strenght of the gravitational [and electromagnetic] forces) I suppose that you may be just be extremely compressed into small small point at the center of the earth because of all the inward forces acting on you....which is basically what the core is (super dense rock..right?)

Here is the equation just for reference: (Force of gravity) = (Gravitational constant) (((mass of object 1) (mass of object 2)) / (distance between objects) ^2)

 

Well thats a different way of looking at it. thanks for the insight i am now only more confused (perhaps its because im completely blazed)

 

Sounds to me like it would be equal to being in space where there is no gravity.

 

I agree. If you made it to a hollow in the center of the Earth, in an imaginary space suit,you would begin to fall through space at the same speed as Earth, and appear to float...

I also think that you would be pulled outward towards the source of gravity. In this case, the inner surface of the hollowed Earth. Outwardly pulled in all directions, or suspended.

 

I vote for weightlessness. Imagine there is a tunnel from one side of Earth, through the center and out the other side. Ignore the issue of pressure, and think just of gravity (meaning you won't be crushed as you get closer to the center). If you jumped into the tunnel from one side, you'd fall toward the center. As you passed the very center, your inertia would be carrying you away from, rather than with, gravity. You likely wouldn't reach the other side of Earth unless you had some serious inertia going b/c you weighed a ton (dunno bout that one), you'd go towards the other side so far and gravity would pull you back. You'd oscillate back and forth until finally coming to rest right in the center.

This link talks about it on the moon and says you'd oscillate forever.
HowStuffWorks "What would happen if I drilled a tunnel through the center of th"

I think the original question should be applied to the Moon since it's just a ball of rock with no atmosphere or tectonic movement. In that case, weightlessness it is

 

gravity is determined by the mass of the two objects, multiplied by a constant G, and divided by r, the distance between the two (GmM/r)... this is gravitational potential energy.. i think (either GmM/r or GmM/r^2)


so, right now, the moon is in EARTH's gravitational field, and Earth is in the Sun's gravitational pull. if an object produced enough gravitational pull as to overcome that of the Sun's, then yes.. we would be pulled off orbit and things would and could get messy.

our seasons, atmosphere, climate, ecosystems, light, darkness, all life systems would be thrown off. it all depends on the proximity to the Sun. my guess would be this object pulling us off of orbit would still become influenced by the MASSIVE gravitational impact the Sun has on all celestial bodies. this theoretical object would, in my opinion, obtain orbit around the Sun eventually. like i said, at this orbit, the proximity is what will determine the effects on the Earth.

theoretically it could happen, but the object in question would need to have more mass than the Sun, and be traveling in a close enough proximity that it would overcome the gravitational potential energy, U, of the Sun (which is pretty fuckin hard)

if Earth were to overcome its own gravitational pull, which right now, to me at least, seems impossible.. we would basically become a black hole (amirite?)


as for apparent weight, the ONLY way for your weight to appear to be different (your mass will remain constant) is if the object has an acceleration, as in a lift, a rocket, or a rollercoaster. some force other than gravity and the associated normal force is acting on the object. this may, for example, be buoyancy, centripetal force due to the Earth's rotation, magnetic force.

being at the center of Earth's gravity will not change your weight/your mass (unless the gravitational acceleration is greater/lesser), it will change YOU however, as the pressure is immense.

 

keep in mind that the earth rotates at 1000 mph. the reaosn we dont feel like we are hauling ass is because there is no change in velocity. think of a car moving at a steady speed. but if u were to slam on the breaks or mess with the speed of the car in anyway at 1000mph it would be a very dramatic demise! so if something were to interfer with the earths rotation or even orbit imagine the earth slamming on its brakes people would be crushed into the ground or tossed into the sky. unless ofcourse you had a seatbelt on

 

1. If an object that large were to come near the earth, the earth would go into the object. Forget about yourself. It would be the Giant Impact Theory that created the Moon, but we would be the object of collision, most likely destroying the Earth in the process.

2. If we got flung out of orbit, we would see the sun disappear at 29.783 km/s. It would take appx. 244.826466 "days" until the earth reached the orbit of Jupiter. We would freeze to death. The only life on earth that would have a chance of surviving would be chemosynthesis reliant life forms at the bottom of the ocean. All surface life would be exterminated.

3. If you drilled a hole straight through the earth, (if you discount plate tectonics), the result would be that when you jumped in, you would accellerate to the center of the earth at 9.8M/s^2, and after passing the center of the earth, you would decelerate at 9.8M/s^2, until you started falling back at 9.8M/s^2. It would take you appx 90m to do one complete transit, and this would continue until you lost momentum. (maybe a couple hundred passes). When you stopped moving, you would be at the precise center of the earth, and completely weightless.

 

um if gravity attracts obbjects by mass and weight, then if two people where and space and no planets or suns were around, would the smaller person would just be stuck to the bigger person? and what if they were the same size? (i know that this senereo is kinda not possible) but just a random question that poped into my head

 

G = 6.6726 x 10-11N-m2/kg2

Now, lets get an assaninly thin person, (40Kg), and an absurdly fat person, (150Kg), and place them at 2cm away from each other. The gravitational attraction between these two people would be 0.00100089 kg/m/s^2. Now, let's do escape velocity.



The people would by no means be "stuck" together. The escape velocity for the fat person would be 0.00011552142658399 m/s. You would be able to break free from the gravitational force with probably no more force then is contained within your average breath from the skinny person.

 

Well here's the thing. While gravity is a pretty strong force, it is no where near as strong as the strong nuclear force, which is the force that holds subatomic particles together (electrons, protons, neutrons). The electromagnetic force exerted between atoms and molecules is insanely stronger than gravity. The electromagnetic field is what stops us from falling through everything. For instance, if you jumped off a building, the ground would crush you because it is impossible to just fall through the ground. The force that crushes you and stops you from falling through the Earth is essentially much stronger than the force that makes you fall.

And it these forces that causes the core of our planet to be extremely dense, constantly increasing in density. The force of countless atoms being jammed packed into a ball at the center of the Earth is unimaginable, and creates the core of this earth, which is extremely hot and it is essentially the power house of our planet.

And it is exactly the same with the sun. The core of the sun is where nuclear fission happens. The force inside the sun is so great that it breaks the nuclear strong force that holds subatomic particles together, releasing immense quantities of energy.

 

Super Mario Galaxy. It has all the answers.