Who does the work in lifting magnetic material with natural magnets?

  • Thread starter Kolahal Bhattacharya
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In summary, the Lorentz force law states that the work done by magnetic force is equal to zero. However, in a circuit, work can be done by the battery. When using natural magnets, the work of lifting magnetic material is done by an external force. The conservation of energy plays a role in this process. The origin of force is a complex topic that has been discussed by experts such as Doc Al and Gokul in past discussions.
  • #1
Kolahal Bhattacharya
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Lorentz force law tells us that workdone by magnetic force=0.Griffiths illustrates an example where work is done by the battery in a circuit.But I am intersted in something more.Who does the work of lifting some magnetic material when we use natural magnets?What is the way of energy conservation?What is the origin of force?
 
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  • #2
Kolahal Bhattacharya said:
Lorentz force law tells us that workdone by magnetic force=0.Griffiths illustrates an example where work is done by the battery in a circuit.But I am intersted in something more.Who does the work of lifting some magnetic material when we use natural magnets?What is the way of energy conservation?What is the origin of force?
You might wish to review past discussions on this interesting question. Here is a https://www.physicsforums.com/showthread.php?t=121922"

AM
 
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  • #3
In AM's link, pay special attention to Doc Al's and Gokul's posts .
 

What is a magnet and how does it work?

A magnet is a material that produces a magnetic field, which is a force that can attract or repel other materials. This is due to the alignment of the atoms within the magnet, which creates a north and south pole. The magnetic field is strongest at the poles and weaker in between.

What are the different types of magnets?

There are three main types of magnets: permanent magnets, temporary magnets, and electromagnets. Permanent magnets, such as bar magnets, retain their magnetism even when not in a magnetic field. Temporary magnets, like a paperclip attracted to a magnet, only exhibit magnetism when in a magnetic field. Electromagnets are created by running an electric current through a wire, which produces a magnetic field.

How can I tell which pole of a magnet is north and which is south?

The north pole of a magnet will be attracted to the south pole of another magnet, while the north poles of two magnets will repel each other. Additionally, if you suspend a magnet from a string, the end that points towards the Earth's north pole is the magnet's north pole.

Can magnets lose their magnetism?

Yes, magnets can lose their magnetism over time. This can be due to exposure to heat, strong magnetic fields, or physical shock. Additionally, permanent magnets can lose their magnetism if they are heated to their Curie temperature, which varies depending on the type of magnet.

How are magnets used in everyday life?

Magnets have many practical applications in everyday life, such as in electric motors, generators, and speakers. They are also used in medical devices like MRI machines and in various household items like refrigerator magnets and magnetic toys. Magnets are also used in industrial settings for tasks like separating metals and lifting heavy objects.

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