Work being done in this system...

Question

oneowone · Answer

In  the following system there are two magnets:

|dw:1364236317966:dw|

When they are attracted to point X: 
|dw:1364236350241:dw|

We agree that there was work done.
W = Fd

The work is based on the force of attraction from the two magnets from point 0 to point X.

Lets say the force was a total of 60N(30N x 2 from each magnet's pole strength).
The distance from point 0 to X was 0.1m
The total work done in this system is 6 Joules?
Is this accurate?

In point 0 the magnet's had a higher potential energy than point X. And PE was converted to Kinetic energy during that attraction?

Can this be a right way to measure the amount of energy used in this system?