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Homework Statement
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There are 3 equal masses connected by springs with length a and spring constant k.
The system can only move in the x axis.
x1,x2,x3 is the position of each massWhat is the potential of the system?
The Attempt at a Solution
I came up with this equation:
[itex] U=\frac{1}{2} k [(a-x2-x1)^2 + (a-x3-x2)^2] [/itex]
is it right? thanks
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