Negative Mass & Negative Gravity??

 It's very strange to hear that negative mass exists. All the objects which  exists on the earth has positive mass. Rather we says that, matter is anything which has mass and occupies space. All  the objects on the earth are made up of matter. It's interesting to know then, 'How negative mass occurs???'

Negative Mass :

Negative Mass is the mass whose sign of the mass is opposite to the mass of the normal matter. Actually when we push something that object has tendancy to move, which says that the object has positive mass. If the object has negative mass, if you push it then gets accelerates towards you.

Example.  -2 kg.

Then how negative mass occurs?? 

There are three criteria's from which the sign of the mass is decided.

• Positive Mass :
• The objects who travels at the speed slower than the speed of light, have positive mass. All the objects slows very slowly compared to the speed of the light.

• Zero Mass :
• The objects who travels at the speed of light, have zero Mass. But, there is nothing in the world which have the zero Mass.  But photon like particles have zero mass, as the photons travels at the speed of light. Which actual means that, the rest mass of the photon is zero, as these are continously accelerating.

• Negative Mass :
• Negative Mass is the mass whose sign is opposite to the mass of normal matter. The objects which travels faster than the speed of light has negative mass. But our laws says that, nothing exists which travels faster than light. Tachyon is the hypothetical particle which travels faster than light, & have negative mass.

Tachyon-

( Negative Mass Particle)

1. Tachyon is the hypothetical particle, who travels faster than the speed of light.
2. It is derived from the Greek word tachus which meaning says that speedy.
3. It has strange property that, " when it loses the energy, then it gains speed."
4. Tachyons are theorized to be constantly traveling faster than speed of light. If tachyon did exists, it would have imaginary number as its Mass.
5. They never found experimentally. As they are travelling through vaccum we can predict theoretically that tachyons like objects exists in quasiparticles in layer like media.

Since a tachyon moves faster than speed of light,after a tachyon passes nearby theoretically we would able to see the particles appearing and departing in opposite directions.

Below are the phases:

Que.

When we measure our weight, the instruments gave us numeric value in kg why not in Newton??

Ans :

• When we measure weight on the instruments it gives numeric value in Kg. These instruments are designed in such a way that, instead we measure weight it gives value in kg.
• The instruments internally does calculations, the weight is divided by the 'g' constant & gave us value in Kg.
• The Newton value is so big to show hence instruments gave value in Kg.
• Also, the 'g' constant is different everywhere. But mass is same everywhere as it doesn't affected by value of 'g' constant.

Negative Gravity:

As we know that gravity is the attractive force. But what's the negative Gravity means??

• Gravitational force is proportional to the masses of two objects. For two positive masses objects have attractive gravitational force.
• In negative Gravity the repulsive force exists between two bodies, in which one body has positive mass and other body has negative mass.
• Negative gravity, is instead of attracting regular mass, it would push it away.
• Hence, negative Gravity is the for e of repulsion.

But, 

The negative gravity( repulsive force) and anti gravity(non gravitational force) both are different terms.

Anti gravity is the phenomenon in which creating the field or object for which gravity doesn't work. Anti gravity is nullification of gravity. While negative gravity is the repulsive force.

Click here to see the places where gravity doesn't work..

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