can u tell me the basic diffrences netween gravity and magnitism?

Question

why cant we interchange these terms.?
if a planet does not have gravity...can it have magnetism?
why is magnitism caused by some objects only....and what are magnets made up of?

Answer 1

1. Magnetism is a stronger force than Gravity. This is proved every time you take a magnet and stick it to the underside of antying containing iron or nickel to attract it which holds the magent to the metallic item, as compared to holding it in your hand and letting it go, when it will fall towards the center of the earth.

2. Magnetism is measured in intensity and in directionality (a.k.a. quantum physics), whereas gravity is measured by the distances between objects and the masses of each.

3. Magnetic energy is either attractive or repulsive or inert, whereas gravity, as far as anybody has told me, is always attractive, and nobody has yet found a way to diminish nor counteract that attraction.

Answer 2

Magnetism and gravity are both inverse square fields, but that's about where the similarity ends. Magnetism comes in two types, North pole and South pole. Gravity does not. There are no 'isolated poles' of magnetism. If there is a magnetic field, there will be a north and a south pole involved.

Gravitational force exists between all masses in the Universe, therefore your planet with no gravity would have ot have no mass. It *is* possible for a planet to have gravity, but no magnetic field. But I don't know if any of the planets in our Solar System have that characteristic.

To fully understand why some materials are 'magnetic' and others aren't takes a fair bit of physics to explain and understand, but magnetic materials are pretty much always either metals or some types of ceramics. And those are also the same materials that magnets are made out of.

HTH ☺

Doug

Answer 3

Hello! Shadowfax....
I'll try to explain you the basic differences between gravity and magnetism. First of all, I will give you an example. If Earth has magnetism, then why does materials like glass, plastic, paper are also attracted by Earth? The answer to that question is Earth has two forces both magnetism, gravity. Here magnetism does its job for directing a freely suspended magnetic needle in north-south directions. But the attraction force is due to the special property called Gravitational force. It is applicable to all bodies having some mass. Means that they can also attract every body in this universe weakly or strongly. Magnetism is a property which will arise due to the presence of iron core in the Earth. Hope you could have understood the basic difference between gravity and magnetism...

Answer 4

Repulsion is the basic difference between magnetism and gravitational force .
gravitational force is of only Attracting in nature while magnetic force is of both of Attraction as well as of repultion .
The force of gravitation is due to mass of the two bodies while the magnetism is the property of the substance that's why we can't interchange them.
For zero gravity the mass of the planet must be negligible which is not possible thus it is impossible to have any body without gravity.