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A comment on Can Repelling Magnets Replace the Spring in a Pogo Stick?. Parent comment

Re:Can Repelling Magnets Replace the Spring in a Pogo Stick? by gonzo on Sunday December 16, 2018 @04:29PM (#18695364)
Entering “elevator safety mechanism” into google will bring up several links with explainations. The first link for me references this story.
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