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**1. The problem statement, all variables and given/known data**

A string is rotated around a point with a radius of 4 meters. Calculate the potential energy stored in the spring

**2. Relevant equations**

F = KX

**3. The attempt at a solution**

The solution to the problem involves making the force of a spring equal to the centripetal force. I don't really understand why that would be. Both forces Point towards the center of the circle. How do we know that they are equal? They are not counterbalancing each other if they are both going in the same direction.