This following applet is [b]Coupled oscillators[/b]
Created by prof Hwang Modified by Ahmed
Original project [url=http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=1125.0]Coupled oscillators[/url]

Two springs with spring constant k1,k2 are at their original length, with attached mass m1,m2.
The restored force for spring \vec{F}=-k*\Delta \vec{x}
There is a smaller spring (spring constant k<<
Use your mose to drag one of the mass (e.g. right one). You will find it starts to oscillate.
However, the amplitude will become smaller and the left one will start to oscillator,too.
You will find energy transfer from right to left, then later from left to right - throught coupled spring.

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