Friday 19 June 2020

newtonian mechanics - What is the physics of a spinning coin?


When we spin a coin on a table, we observe 2 things:




  1. It slows down and stops after sometime.




  2. It does not stay at just one point on the table but its point of contact with table changes with time.





I was trying to explain quantitatively this but I am stuck at how to take frictional torques into account. Any help will be appreciated.




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