Illustration of the concept of coenergy in a mechanical linear spring.
The drawing was adapted from: Karl A. Seeler, System Dynamics: An Introduction for Mechanical Engineers, Springer, 2014, ISBN 9781461491521, p. 10-15
You are permitted and indeed encouraged to use this image freely, for any legal purpose including commercial, and with any modifications (the permission is hereby given, so there is no need to ask for it explicitly again), but you MUST always give the following credits:
S. Zurek, Encyclopedia Magnetica, CC-BY-4.0
We would appreciate if you let us know of any use: email@example.com