1. The problem statement, all variables and given/known data A heavy metal chain of mass 0.6 kg hangs over the edge of a table. When half the chain is hanging over the edge, what is the magnitude of the external net force that causes the chain to accelerate? What's the acceleration of the chain when half of it is over the edge? 2. Relevant equations Fnet = ma Fnet = mg (Object in free fall) 3. The attempt at a solution I have an idea of what to do here but I'm not sure if I'm correct or not. Fnet= mg 0.3 (half over the edge) times 9.8 (gravity) = 2.94N. I can only guess that 2.94 is the external net force. I think I might have to factor in the other 0.3 in some way but I'm not completely sure. I don't know how to calculate the acceleration. please help!