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**1. The problem statement, all variables and given/known data**

A uniform chain of length l and mass M contains many links. It is held above a table so that one end is just touching the table top. The chain is released freely. What is the force between the links? What is the time for the topmost link to fall to the table?

**2. Relevant equations**

v=u+at, v^2 = u^2 + 2as

**3. The attempt at a solution**

I think that the time to reach the table is sqrt(2s/a), because v=at, so (at)^2=2as, so rearranging that would give me that answer. I'm trying to visualise the part about the force though; is it that the only force exerted on each chain the weight of the chain below it? Or is it tension, in which case Mg-T=Ma, so T=Mg-Ma?