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**How to obtain the magnetic force??**

Hi ,

I didn't have any experience to design coil and permenent magnet .

Now i have to do one project using coil and magnet NdFeB. But i haven't got the maximum force. (need maxi force between 1300 to 2500)

I am doing the below procedure. Is it correct???

using DC supply 48V,

known value :core internal and external diamer, length

1. choose the wire size (From AWG spec)

2. calculate the number of turns / layer (turns/inches * core length)

3. calculate the number of layers (turns / inches * core thickess)

4. calculate total no of turns (Step 2 * Step 3)

5. calculate the wire length (using AWG spec's : ohm / km)

6. calculate the resistace and current.

7. calculate the B using (B = u0 * N*I/L)

8. calculate Force using (F=B*I*L(length of wire)).

Do i need to consider NdFeB magnet mass and B in this calculation??? How can i get the force??

Anybody helps me?

Thanks in advance for the help.