When a 4.25 kg object is placed on top of a vertical spring, the spring compresses a distance of 2.62 cm. what is the force constant of the spring?

The force applied to the spring is the weight of the object that compresses it, so it is equal to:


Because of this force, the spring compresses by . Using Hook's law,
,
since we know the intensity of the force (the weight W) and the compression of the spring, x, we can find k, the spring constant:

The third hammer 8 pounds

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