[tex] \mu [/tex] is the permeability of the medium between the magnets, in your case this is probably air, the value of [itex] \mu_{air} \approx \mu_0 = 1.26 x 10^{-4} \frac {Henry} {meter} [/tex].chui said:I have a formula, taken from Wikipedia:
http://en.wikipedia.org/wiki/Magnet#Calculating_the_Magnetic_Force"
But I didnt get the meaning of "mu" in this formula..
can anyone explain?
The force between two magnets can be calculated using the formula F = (μ0 * m1 * m2) / (4π * r^2), where μ0 is the permeability of free space, m1 and m2 are the strengths of the two magnets, and r is the distance between them.
The unit of measurement for magnetic force is Newtons (N).
Yes, the force between two magnets can be either attractive or repulsive depending on the orientation of their poles. Like poles (north to north or south to south) will repel each other, while opposite poles (north to south) will attract.
Yes, the force between two magnets is inversely proportional to the square of the distance between them. This means that as the distance increases, the force decreases.
The strength of a magnet is typically represented by its magnetic moment, which is measured in units of Ampere-meters squared (A*m^2). This information can usually be found on the packaging or label of the magnet.