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Graphical Construction – A line tangent to two circles.

A scene from tonight's video

A scene from tonight’s video

Very often it is necessary to draw a line that is tangent to two circles. A pulley going around two pulleys, or a rope tied around a cylinder and pulled around a pulley are but two examples. It was something I had to draw when I was determining the pass-line of sheet aluminium being fed through a processing line. In this video I am showing how to draw this when the line is on the same side of the center of both rolls. The next video will show how to do it when crossing the line between the two centers of the axis of the two rollers.

This procedure makes use of several of the procedures we have recently learned, These are:

The video is below:

Gary

 

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Graphical Construction – A line tangent to two circles.” by Create-and-Make.com is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.

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