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Surprisingly such a simple system as a mass on a spring can exhibit very curious behaviour.  There are two motions interacting here, the side to side swing of a pendulum, and the up and down bounce of a spring.  If the bouncing is set to be twice as fast as the swinging then the system will swap between the two motions, regularly transferring up-down energy into swinging and vice versa. [video] [more] [code]

Surprisingly such a simple system as a mass on a spring can exhibit very curious behaviour.  There are two motions interacting here, the side to side swing of a pendulum, and the up and down bounce of a spring.  If the bouncing is set to be twice as fast as the swinging then the system will swap between the two motions, regularly transferring up-down energy into swinging and vice versa. [video] [more] [code]

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    Fuerza y mov
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Matt Henderson

I post original stuff about maths, space, computational linguistics and other things that I like. This blog is meant to be accessible and interesting to people of all backgrounds. My undergrad was maths in Cambridge, and I'm now starting research in Speech and Language technology. Email me at If you're new, check out this overview of my posts. All code posted is in Mathematica.

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