Spiral with 3 lines

Job ID: 36378922

Budget: $10 – $30 USD

I am looking for a designer to create a spiral with three lines starting from a circle. I would like to have a flat version and a conical version (see examples in the attached file).

The 3 lines can be any colour that gives a good contrast (e.g., red, blue and green ?), but we have to remember that the images may be printed in black and white. So, it may be a good idea to have the lines with different thickness? Dashed lines? As long as the spiral can be seen and understood if printed in black and white, it is fine. I am open to ideas.

This is for a university project. Besides printing on A4/Letter page, I may use on PowerPoint Presentation. The image can be saved in ordinary JPNG/PNG. I don’t need anything especial, just to be able to make them a bigger or small without losing too much quality.