This seems like a simple issue but Google has not helped.
I want to use a permament magnet (moved into, or out of place by a servo) to decouple model trains. I am using a piece of paper clip soldered to a piece of guitar string such that the force of the magnet on the paper clip causes the guitar string to deflect. This image should convey the idea.
What I have not been able to figure out is what changes to the paper clip affect the distance at which the magnet will cause the spring to deflect.
Things I have been trying to experiment with include
- the mass of the clip (a longer piece)
- the area of the clip facing the magnet
but my experiments have not been conclusive
Everything I have so far found with Google is too theoretical. I am just looking for a simple rule of thumb equivalent to “a bigger hammer hurts more”
Has anyone any knowledge of this, or any useful links