[{"data":1,"prerenderedAt":44},["ShallowReactive",2],{"post-/posts/kapitzas-pendulum":3},{"id":4,"title":5,"body":6,"created":34,"description":35,"extension":36,"meta":37,"navigation":38,"path":39,"seo":40,"stem":41,"updated":42,"__hash__":43},"posts/2.posts/20160119.Kapitzas Pendulum.md","Kapitza's Pendulum",{"type":7,"value":8,"toc":30},"minimark",[9,13],[10,11,12],"p",{},"When you hold a pendulum upright—with its mass above the pivot point—it will tumble down, right?",[10,14,15,16,23,24,29],{},"Well, if you vertically shake it at ",[17,18,22],"a",{"href":19,"rel":20},"https://en.wikipedia.org/wiki/Kapitza%27s_pendulum#Equilibrium_positions",[21],"nofollow","just the right frequency"," it won't, and ",[17,25,28],{"href":26,"rel":27},"https://demos.hankruiger.com/inverted-pendulum",[21],"this simulation"," demonstrates that!",{"title":31,"searchDepth":32,"depth":32,"links":33},"",2,[],"2016-01-19","Stabilising a pendulum by shaking it vertically.","md",{},true,"/posts/kapitzas-pendulum",{"title":5,"description":35},"2.posts/20160119.Kapitzas Pendulum",null,"HIpAiGurMXq4eXvEDpL-g70mdP-66H8CXPxXlVc-HhE",1775234852284]