ie. no thrust of any kind
2007-07-26 04:15:56 · 6 answers · asked by Olof 2 in Science & Mathematics ➔ Physics
If by vacuum you mean that no substance exist in that geometrical space it is emptiness and devoid of any field.
Then the Gravity phenomena would not exist. The magnetic phenomena of space would not exist either ,because the gravity phenomena are both related by the same aspect except in different condensed configurations.
In Reality Space is not empty but contains a substance that is the cause of all motion as well as holding masses into an integral structure.
2007-07-26 04:58:17 · answer #1 · answered by goring 6 · 0⤊ 0⤋
Do you mean to 'keep and object moving' or to get it to 'start moving'? The two are different. The first does not require thrust while the second does require thrust. This does not matter whether the object is in vacuum, air or on the ground.
To keep anything moving against gravity continuosly, there must be some kind of thrust. If not, it will eventually slow down.
2007-07-26 13:10:50 · answer #2 · answered by Mr Man 2 · 0⤊ 0⤋
Yes, it is possible. In fact industries use vacuum for conveying liquid and solids from one place to another, horizontally as well as vertically (against gravity). The logic is simple. One end of the conveying tube is connected to vacuum pump and the other end is open to atmosphere (14.7 psi absolute pressure). Thus a pressure difference of upto 14.7 pound per square inch (psi) is created which acts as a driving force.
One good example, is the vacuum mopper (with a 5-20 gal tank attached) to suck and collect water on the floor from a flooded basement at home. Vacuum need not be absolute (0 psia) and any partial vacuum will do. It is the pressure difference at both the ends which drives the object towards the source of vacuum.
2007-07-26 12:58:21 · answer #3 · answered by yogesh u 3 · 0⤊ 0⤋
Tastywheat answered well. A space ship can stop - relative to the earth - and then move further from earth (working against gravity in a vacuum) but the center of mass does not move further from the earth. In fact the center of mass of any rocket remains on the launch pad. The gases that shoot out have mass.
2007-07-26 11:42:36 · answer #4 · answered by George Fischer 2 · 0⤊ 0⤋
The only way would be by using magnetic fields (strong enough to counteract gravity).
As you know, nothing is "available" in the vacuum. Electromagnetism is the only other force besides gravity that propagates through vacuum on large scales.
2007-07-26 11:19:04 · answer #5 · answered by tastywheat 4 · 0⤊ 0⤋
...absolutely ! ...every time I use my vaccum, it moves thru space with no problem at all and all the crap it picks-up flows thru the vaccum just fine... (gotta dump it out ever so often but it works great)... It's an Orick, you should try one....
2007-07-26 11:25:52 · answer #6 · answered by Anonymous · 0⤊ 0⤋