How Do You Calculate the Attractive Force of an Electromagnet?

[kosoniscs]

How can I calculate a electric-magnet? I mean, I want to built a electric-magnet to raise for example 1kg. I know that the atractive force depends on the current and the number of wires in the coil, as well the quality of the steel in the middle of the coil. But I don't know how can I associate this parameters to an attractive force like 10 Newonts.
Can anybody help?

 

[Nereid]

Duplicate post; this thread closed. Please continue discussion here.

 

[Graeme Robinson]

Calculating the attractive force of an electromagnet can be done using the formula F = (N x I)^2 x μ x A / (2 x g^2), where N is the number of wire turns, I is the current, μ is the permeability of the core material, A is the cross-sectional area of the core, and g is the air gap between the core and the object being lifted.

To begin, you will need to determine the desired force of 10 Newtons. From there, you can rearrange the formula to solve for the parameters you need. For example, if you know the desired force, number of wire turns, and current, you can solve for the permeability or cross-sectional area.

Additionally, the quality of the steel in the core can affect the strength of the electromagnet. Higher quality steel will have a higher permeability, resulting in a stronger magnetic field.

It is important to note that this formula is an approximation and may not give an exact result. Factors such as the shape of the core and the distance between the core and the object can also affect the attractive force. It may be necessary to experiment and adjust the parameters to achieve the desired force.

In summary, to calculate the attractive force of an electromagnet, you will need to use the formula F = (N x I)^2 x μ x A / (2 x g^2) and rearrange it to solve for the desired parameters. Experimentation and adjustments may be necessary to achieve the desired force.