Here is the problem that's confusing me: A frictionless chain of length 2.00m is held with 20.0% of its length hanging over the edge of a table. The chain is then released. Determine its speed the moment the entire chain comes off the table. (Answer = 4.34m/s)
------\[a+b=n, \gcd(a,b)=1,a,b\in\emph{A}\]\[\iff |A|=\sum_{k=1}^{n}\phi(k)\]
------\[a+b=n, \gcd(a,b)=1,a,b\in\emph{A}\]\[\iff |A|=\sum_{k=1}^{n}\phi(k)\]
