How Does a Coin Behave When Placed on a Magnet and Released?

[h_bpour]

IYPT Question--Coin and Magnet

I don't really need an answer.
I just need someone to guide me or tell me what I need to study on.
Or if you have any ideas on this question, feel free to express them.

Place a coin vertically on a magnet. Incline the coin relative to the magnet and then release it. The coin may fall down onto the magnet or revert to its vertical position. Study and explain the coin's motion.

 

[rude man]

What are the two forces actin g on the coin, and how do they reolve as a function of the initial angler the coin makes with the vertical when released?