# How do you find the force between two magnets?

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The most elementary force between magnets, therefore, is the magnetic dipole–dipole interaction. If all of the magnetic dipoles that make up two magnets are known then the net force on both magnets can be determined by summing up all these interactions between the dipoles of the first magnet and that of the second.

## What is the force between two magnets called?

The force that a magnet exerts on certain materials, including other magnets, is called magnetic force. The force is exerted over a distance and includes forces of attraction and repulsion. North and south poles of two magnets attract each other, while two north poles or two south poles repel each other.

## Can you force two magnets together?

6 Answers. If we keep two magnets with same poles together, then they’ll become weaker overtime. … In fact, to change the magnetic properties the magnetic domains inside must be reoriented. But the force excerted by the second magnet is not strong enough to do so.

## How do you calculate magnetic pull force?

Divide the force in Newtons by the area in mm2 and the pressure is calculated (in Pascals or N/ mm2). The pull force is given as a pull of the magnet perpendicular to the ferromagnetic surface. But the magnets can slide along the surface with a shear force.

## Are 2 magnets stronger than 1?

Two magnets together will be slightly less than twice as strong as one magnet. When magnets are stuck entirely together (the south pole of one magnet is connected to the north pole of the other magnet) you can add the magnetic fields together.

## Is a magnets push or pull stronger?

In any magnet, there are areas where the force of magnetism is strongest. … If the north pole of one magnet lines up with the south pole of another, the magnets pull together. If the north pole of one magnet meets the north pole of another (or south meets south), the magnets push apart.

## Can magnets demagnetize each other?

When a magnetized magnet is exposed to a strong magnetic field that is established in opposition to the magnet’s magnetization, part of the magnet may be demagnetized. … External demagnetizing fields can originate from fields created by electromagnets/coils or other neighboring permanent magnets.

## What happens when two magnets are positive?

Opposite poles of a magnet attract each other, whereas like poles repel each other. … However, when lined up with another north-seeking pole, the two magnets would push away from each other because their forces are not compatible.

## What happens when you push two magnets together?

When two magnets are brought together, the opposite poles will attract one another, but the like poles will repel one another. This is similar to electric charges.

## How strong is 1000 gauss magnet?

A rating of 1,000 gauss resistance is equal to about 80,000 A/m. As you can see, the B and H fields aren’t really different so much as they are the same phenomenon seen from different perspectives.

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## What is n42 grade magnet?

What does grade n42 magnet mean? The grade N42 means a neodymium magnet has a maximum energy product of 42 MGOe. It refers to the maximum magnetic energy that the material can be stored. It can be showed by the magnet’s Demagnetization Curve, or BH Curve – the strongest point is (BH)max.

## What is pull force magnet?

The pull strength is the highest possible holding power of a magnet, measured in kilograms. It is the force required to prise a magnet away from a flat steel surface when the magnet and metal have full and direct surface-to-surface contact.

horseshoe shape

## How long will a magnet stay magnetized?

How long does a permanent magnet last? A permanent magnet, if kept and used in optimum working conditions, will keep its magnetism for years and years. For example, it is estimated that a neodymium magnet loses approximately 5% of its magnetism every 100 years.

## What are the 7 magnets?

The main types are:

• Neodymium iron boron (NdFeB)
• Samarium cobalt (SmCo)
• Alnico.
• Ceramic or ferrite magnets.