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Animate a Point in plot of a propeller?

Posted 13 days ago
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in wolfram mathematica I have the following code:

Animate[
    ParametricPlot3D[
        {x = Sin[t], y = Cos[t], z = t}, {t, 0, 5 Pi}], {t, 0, 5Pi}]

Propeller

But it failed to animate a point that goes in the helix as I give values ​​to T (0,5Pi)

here if I could:

Animate[Graphics[{ Circle[{2, 5}, 2], 
   Point[
    {2 + 2 Cos[t], 5 + 2 Sin[t]}]}], {t, 0, 2 Pi}]

![][2]

If you could help me do it in the same way I would appreciate a lot, sorry for my English

Posted 13 days ago

You are using the same "t" inside ParametricPlot and as the animation variable. Use "t" inside ParametricPlot and e.g. "s" to animate. (x, y and z are of no use). Try this code:

Animate[ParametricPlot3D[{Sin[t + s], Cos[t + s], t}, {t, 0, 5 Pi}, 
  PlotRange -> {{-1, 1}, {-1, 1}, {0, 5 \[Pi]}}], {s, 0, 2 Pi}]
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