Movement of a circle in contact with a rotating ellipse.

Hello everyone.

I am having some problems with this geometry problem I have been
handed.

A simple diagram will help my subsequent description:

o o Two circle fixed in position
0 Ellipse
o Circle

The top two circles are fixed. The bottom circle can only move up and
down. The ellipse is always in contact with all the circles. The
problem is to describe the motion of the bottom circle as the ellipse
is turned.

Any help would be very much appreciated.

Thank you

Lee Russell

.

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