Here's why:
* Inverse Square Law: The strength of the magnetic force follows an inverse square law. This means that the force is proportional to the inverse of the square of the distance between the poles.
* Mathematical Representation: If you have two magnetic poles with strengths m1 and m2, and they are separated by a distance r, the magnetic force (F) between them is given by:
F = (μ₀ / 4π) * (m1 * m2) / r²
Where μ₀ is the permeability of free space (a constant).
* Conclusion: As the distance (r) decreases, the denominator of the equation gets smaller, resulting in a larger value for the force (F).
Think of it this way: The closer the poles are, the stronger their magnetic field lines interact, leading to a stronger attractive or repulsive force.
