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I am trying to solve Newtons equation for a particle in (x, y, z) using NDsolve. Here I what I have so far:

The force acting on the particle only affects (x, y), not z. However, my plot is empty.Code (Text):

sol = NDSolve[{

x''[t] == acceleration[x'[t], y[t], z[t]],

y''[t] == acceleration[y'[t], x[t], z[t]],

z''[t] == 0,

x[0] == 2, x'[0] == 0, y[0] == 0, y'[0] == 0, z[0] == 0,

z'[0] == 250},

{x[t], y[t], z[t]}, {t, 0, 1}];

ParametricPlot[{x[t], x'[t]} /. sol, {t, 0, 0.001}, PlotRange -> {{0, 0.35}, {0, 5}}, AspectRatio -> 0.75]

Is my use of NDsolve correct?

Best,

Niles.

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# Mathematica: NDSolve in 3 dimensions

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