How do you calculate how much a magnet will decelerate when it moves through coil?

What's the equation and what do I need to know?

Question

How do you calculate how much a magnet will decelerate when it moves through coil?

What's the equation and what do I need to know?

owlfred · Answer

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anonymous · Answer

A magnetic field exerts a force on an electrically charged particle traveling through it.
If both electric (E) and magnetic (B ) fields are present then use the Lorentz force law:$$F = q( E + vxB )$$for a particle with charge q and velocity v.
Use Newtons 2nd law to find the acceleration = F/mass

Also, you can use Coulomb's Law:$$F=k \frac{q_1q_2}{r^2} = \frac{q_1q_2}{4 \pi \epsilon_0 r^2}$$