Hi
If I bring a piece of iron bar and a permanent magnet "PM" and put them together where the iron will be attracted to the N pole. then the other end of the iron bar will exibit the force of the S pole.
Keeping the PM size constant. If I increase the size of the iron bar by 1000 times, what effect on the force of the S pole will size-change do? what formula does one uses?
thx
If I bring a piece of iron bar and a permanent magnet "PM" and put them together where the iron will be attracted to the N pole. then the other end of the iron bar will exibit the force of the S pole.
Keeping the PM size constant. If I increase the size of the iron bar by 1000 times, what effect on the force of the S pole will size-change do? what formula does one uses?
thx
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