I am trying to convert a F = m a into CA, so far, I have got:
F = (m/(Power[del[t], 2])){x[t+del[t]] + x[[t-del[t]] -2x[t]}
therefore,
x[t + del[t]] = (F*Power[del[t], 2])/m+ 2 x[t] - x[t-del[t]]
Now, it seems to be in form that can be translated to CA. The next cell depends upon two cells above. How can I put it into a CellularAutomaton command? Help please.