Can Moving Masses Create a New Field Similar to Magnetic Fields?

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In summary: It explains Gravitomagnetism in-depth. In summary, it is known that Magnetic fields are set due to moving electric charges. Since electric and gravitational fields are proportional to 1/r^2 where r is the distance from the charge and body respectively. Also both these fields obey Gauss law. So they are identical in certain aspects.
  • #1
Alpharup
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It is known Magnetic fields are set due to moving electric charges. Since electric and gravitational fields are proportional to 1/r^2 where r is the distance from the charge and body respectively. Also both these fields obey Gauss law. So they are identical in certain aspects
I was sitting in my balcony drinking a cup of tea and suddenly a thought came to my mind. Is there a new field set up due to moving masses, the same way magnetic field is set up due to moving charges?
For example when an electric current(I=dq/dt) passes through a wire, magnetic field is set up in concentric circles. now the same analogy can be extended to this situation. let us take a tube and let water flow through it. let the rate of flow of mass be constant, the same way the rate of flow of charge is constant in given wire ie.. dm/dt is constant.Now by analogy, will a new field be set up in concentric circles around the tube the same way magnetic field is set up around the wire ?
 
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well you should see that if this flowing will affect as it affect in the case of current carrying wire to anything out, also electromagnetism and gravitation are different otherwise maxwell might have given a theory of gravitation also.
 
  • #3
sharan swarup said:
Is there a new field set up due to moving masses, the same way magnetic field is set up due to moving charges?

In general relativity, yes, in a way. It's not really a "new" field in that it's simply an aspect of the gravitational field (space-time curvature) that comes out of solving the Einstein field equations of GR, under certain conditions.

http://en.wikipedia.org/wiki/Gravitomagnetism
 
  • #4
jtbell said:
In general relativity, yes, in a way. It's not really a "new" field in that it's simply an aspect of the gravitational field (space-time curvature) that comes out of solving the Einstein field equations of GR, under certain conditions.

http://en.wikipedia.org/wiki/Gravitomagnetism

Thank you for the link.
 
  • #5


Yes, it is possible for a new field to be set up due to moving masses, similar to how a magnetic field is set up due to moving charges. This is known as a gravitational field and is governed by Newton's law of universal gravitation, which states that any two objects with mass will exert a force on each other. This force is proportional to the masses of the objects and inversely proportional to the square of the distance between them.

Like electric and magnetic fields, gravitational fields also follow the inverse-square law and obey Gauss's law. However, there are some key differences between these fields, such as the fact that gravitational fields only attract, while magnetic fields can both attract and repel.

In the example given, the flow of water through a tube can create a gravitational field around the tube, just as the flow of electric current in a wire creates a magnetic field. This field can be visualized as concentric circles around the tube, similar to the magnetic field around a wire.

Overall, the concept of fields due to moving masses is an important aspect of physics and plays a crucial role in understanding the interactions between objects in our universe.
 

Related to Can Moving Masses Create a New Field Similar to Magnetic Fields?

What is the concept of "Field due to moving masses"?

The concept of "Field due to moving masses" refers to the idea that a moving mass, such as an electron or a charged particle, creates an electric or magnetic field around it. This field can affect other particles or objects in its vicinity.

How is the field strength determined for a moving mass?

The field strength for a moving mass is determined by its velocity and the distance from the mass. The greater the velocity of the mass, the stronger the field will be. The closer the distance to the mass, the stronger the field will be.

What is the difference between electric and magnetic fields created by moving masses?

The main difference between electric and magnetic fields created by moving masses is the direction of the force they exert. Electric fields act on charged particles, while magnetic fields act on moving charged particles. Additionally, electric fields are always present around a charged particle, while magnetic fields only exist when the particle is in motion.

Can the field created by a moving mass be shielded or canceled out?

Yes, the field created by a moving mass can be shielded or canceled out by another opposing field. This can be achieved through the use of conductive materials or by manipulating the direction and strength of the opposing field.

How is the field due to moving masses used in practical applications?

The field due to moving masses is used in various practical applications, such as in electric generators, motors, and particle accelerators. It is also important in understanding the behavior of charged particles in magnetic fields, which is essential in technologies like MRI machines and particle beam therapy for cancer treatment.

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