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## Homework Statement

Repelling force F=kx. What is the motion equation

## Homework Equations

F=ma

## The Attempt at a Solution

what I did so far, I found the equation of motion which is equal to x= sqrt(2E/K)Sin(wt+b), I am not sure about my answer.

For the second part it is kind of tricky for me, I know a point where the potential energy has a minimum is called point of stable equilibrium, and a point where the the potential has a maximum is called a point of unstable eqiulibrium. I couldnt really got what I should do for the second part

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