How to draw a stretched/pulled/conical spiral

Question 1

I’m trying to redraw a diagram, and I’m having difficulty recreating the base spiral:
Diagram/Spiral

I need to make the concentric spiral part.

Can you help me?

Question 2

It is easy as usual!
For that i will use Illustrator CS5.

1) Take a “Spiral Tool”

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2) Now click on the screen and set some options for the spiral creation. Then click “OK”

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3) A new spiral will be drawn:

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4) Now transform the spiral:

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5) Rotate and scale:

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6) It will be look like this:

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7) Take a “Reshape Tool” (the magic begins 🙂

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8) Select the lowest node of the spiral and drag it to bottom:

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9) Thats all:

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Answer