As stated I have a "artificial" gravity question. I have always been told that the size/density of a body determines it's gravitational pull. So people say that some of those sci-fi movies where the ships are the size of a small planet would flood the earth with tidal waves and whatnot because they are large enough to have thier own gravitational field?
So, if we built a spacecraft large enough, it would have it's own gravity?
I know it would be slight because the ship would have very little mass/denisty, but it would have a -little- gravity? So, when the space shuttle is in orbit, does it have a tiny amount of gravity? Maybe not measurable with our instrumentation, but still there anyway?
I have phrased my question poorly, but I think you can get the gist of meaning, thanks in advance.
Oh, how about an object on a an object, what about that? If a skyscraper were made of lead (suspend arguments concerning foundation issues, lol). Even though it is on a body (the Earth) that has enough mass/density to have a large gravitational field, would the lead skyscraper also have it's own gravity?