Caedes I am not questioning your reading skills, but I never said that the velocity of the faller in the shaft was zero at the center, The analogy to a pendulum is fitting, your protests only show your prejudices. The same formulae apply. Like a pendulum, the falling mass would oscillate with ever smaller amplitude and come to rest in the center, and then be un-moved, because it has found the one place all the plumb-bobs, or stopped pendulums pointed to: the center of no gravity, or balanced gravity if you will.
To add to that, during such a fall, inside a preferable evacuated shaft, the downward acceleration would be greatest near the surface, and at the center the traveller would be coasting. Because of any friction, the almost weightless floater would start falling from lower and lower heights from the center, would be moving slower and slower, come to a standstill or hangstill at the center, ceased to be accelerated
Prologos,
Since you are questioning my reading skills I have quoted your earlier post where you claim that during such a fall you would come to a stop at the centre. You seem to be confused about the difference between acceleration and velocity. You also seem to have a very short memory. I didn't disagree with 'your' pendulum analogy at any point, perhaps you are confusing me with someone else.