Two masses are connected by springs to a wall.  The graphs produced are called Lissajous curves and are generated by simple sine and cosine functions.

  • You can change mass, spring stiffness, and friction (damping). 
  • You can drag either mass with your mouse to change the starting position. 
  • Energy can be observed (potential, kinetic, total) by clicking the "show energy" checkbox. 
  • Graph tab shows any two variables including energy.
  • Time Graph tab shows any three variables against time.
Explanation of the math is available, along with open source code. 

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