Some people like to twirl a round chain on a finger.
I like to "twirl" a round chain on... a cone
on two nails
and on one... corner.
Can you determine (numerical or symbolical - better with Mathcad and without friction) the critical value of the alpha angle when the chain falls off the corner?
I feel it is a solution - a numerical solution. Check please Mathcad 15 sheet in attach.
I am waiting for one symbolical solution. What is it 108-109 deg?