Both are concept of magnets, why is the attraction different ? can we simulate earth kind of attraction in the lab which mearly attracts every thing towards it ?
2006-12-05 02:43:01 · 4 answers · asked by samuels1984 1 in Science & Mathematics ➔ Physics
Because the earth's attractive force is gravity, which works on anything with mass and is always attractive as far as we know. Magnets attract only other metallic objects, and if the other object is also a magnet they can either attract or repel each other.
The two forces are similar only in the sense that they decrease in strength by the square of this distance between them (and this is geometrical evidence that we live in essentially flat Euclidean space, but that's another story). Gravity is by far the weakest force, as even a toy magnet overcomes the earth's gravity when it picks up a paper clip!
2006-12-05 03:15:00 · answer #1 · answered by hznfrst 6 · 0⤊ 0⤋
The force of attraction between, say, you and the Earth is due to you both posessing gravitational mass. Depending on which theory you are using, this mass either cases defects in spacetime which causes a net attraction or each massy object emits gravitons which carry the force of attraction.
The force of attraction from one magnet to another is due to the magnetic dipole moments. When two magnets attract (or repel) each other the force is being transmitted by virtual photons. Yes, photons are the carrier for electro-magnetic force.
Whilst it is true that the centre of the earth is magnetic this is believed to be due to the high-pressure iron core of this planet. Interestingly, not all planets are magnetic like ours (this is an opportunity for you to do some homework!)
The gravitational force is much weaker than the magnetic force, by the way, and not the other way round (like someone else here wrong). The only reason we feel the force of gravity more is because a) we have very little mass compared to the Earth and b) we have very little magnetisation compared to, say, a small bar magnet.
NOTE: Don't get me started on the Higg's Boson because it doesn't exist.
2006-12-05 02:55:14 · answer #2 · answered by Mawkish 4 · 0⤊ 0⤋
It is two different kind of forces
Earth does not attract things since they are magnetic but the force is gravitational
2006-12-05 02:47:30 · answer #3 · answered by maussy 7 · 1⤊ 0⤋
both are concept of magnets but earth gravitational force is way stronger that its magnetical force
gravitational force in a lab? in space yes but not on earth
2006-12-05 02:47:26 · answer #4 · answered by Anonymous · 1⤊ 1⤋