WOLFRAM|DEMONSTRATIONS PROJECT

Interacting Cylindrical Magnets

R

1

(cm)

2

4

6

8

r

1

(cm)

0

1

2

3

4

h

1

(cm)

.5

1

2

4

6

8

10

R

2

(cm)

1

2

3

4

r

2

(cm)

0

.5

1

2

3

h

2

(cm)

.2

.5

1

2

4

6

8

distance

accuracy

low

medium

high

stiffness factor

range

30

20

15

10

5

This Demonstration shows how cylindrical magnets interact and calculates their attractive force.

The magnetization is given by

M=

B

r

/

μ

0

=4.3

5

10

A/m

(remanent field

B

r

=0.54T

).

Magnet parameters:

h

1

,

h

2

lengths;

R

1

,

R

2

outer radii;

r

1

,

r

2

inner radii.