Finding normal force on a skater at the top of a circular path

[Delphi51]

Most welcome. Quite an interesting problem, too.

 

[yster]

thanks a lot Delphi51. I don't think would have managed to make it that clear.

 

[tmn50]

I don't mean to be a bother but i have a problem with an electrochemical cell
here is the link if you would like to give me a hand
https://www.physicsforums.com/showthread.php?p=3317518#post3317518"