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## Homework Statement

The elastic constant of a spring holding an object in equilibrium is 600 N/m. Find the extension of the spring with respect to its initial length if the object has a mass of 480 g.

## Homework Equations

hooke's law: F = -ky

## The Attempt at a Solution

I know that the answer is supposed to be 0.0125m, but I'm not sure as to how to arrive at this solution. I'm also a bit unclear as to how everything fits together (for instance, does initial length refer to the equilibrium position?), as I'm new to this concept. Could anyone please give a simple, straight-forward walk-through? Thanks!