Mass is related to gravity right?
so would a apple orbit a human floating in space?
what if he was a light year far away from any planet, stars or anything would a apple orbit a guy floating in space?
if still no that under what conditions would a apple orbit a guy floating in space
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Re: Question 2
If an apple and a person were transported into deep space, outside the gravitational effect of other bodies, the apple and person would move toward each other. If the apple had the right momentum, it could orbit the person.
Didn't something like that happen billions of years ago, when all there was were vast clouds of hydrogen gas, and only after a lot of time and the right random quantum fluctuations, did all that gas eventually move and swirl and yada yada yada?
They wouldn´t orbit each other because the mass is too little. They would just hang there in space, well except for the human who would blow up due to excess internal pressure.
But how would they (or we) know if they were moving or not, seeing all refrence points in space are moving?
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I know the less mass you have, the less gravity effects you. Once you get small enough, electromagnetism takes over. There would seem to be a point were these two forces switch over, but I do not know what that is.
I don't think so. No matter what your mass is you exert some gravity on the things around you. In practice the mass of things other than stars and planets are so low that everything else that happens overwhelms that gravity. But in the ideal case of have a person and a tiny mass in empty space, far away from anything else there's no reason I know of that the tiny thing wouldn't orbit the person (very very very slowly, mind you, 3.14 meters/day is just a few centimeters every hour).
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Gender: Male Location: Southern Oregon,
Looking at you.
OK, instead of a person and an apple, what would happen if two dust bunnies were in deep space? Would they orbit each other or be magnetically attracted to each other?
If the universe contained only two neutrons lightyears apart, given enough time, they would eventually fall into orbit around a mutual center of gravity (hypothetically assuming, of course, no other forces act upon them, ie, neutron magnetic charges or quantum fluctuations).
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so if there was a planet many times bigger than earth right above the earth would it pull all of us from the earth into it? (that is the earth is magically not being pulled into the planet itself)
I guess that would depend on the mass of the planet and how far away it is.
The Earth pulls us a 9.8m/s/s. We can put this pretend planet is place of the moon for reference and say it needs just barely enough force to pull us off.
So the planet is more massive than Jupiter. If it were closer the mass could be considerably less. If it has to make people go flying off the surface the mass of would have to be considerably more.
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Oct 27th, 2010 05:30 PM
