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Why is my method for finding the spring constant incorrect?
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[QUOTE="jbriggs444, post: 6835593, member: 422467"] Pointing out the error here in yet another way... I do not know what you mean by the term "Weight Force". The contact force of the stone on the spring is distinct from the force of gravity on the stone. The problem statement makes it clear that the two will be equal only at ##x = 10 \text{ cm}##. The work done on the [B]stone[/B] by gravity is the product of the force of gravity on the [B]stone[/B] and the distance moved by the stone while that force is being applied. The force of gravity on stone will be ##mg##. The distance moved is ##x = 10 \text{ cm}##. So you have a correct calculation for the work done by gravity on the [B]stone.[/B] The work done on the [B]spring[/B] by the stone is the product of the force of the stone on the [B]spring [/B]and the distance moved by the spring while that force is being applied. The force in this case will not be ##mg##. Instead, it will be given by Hooke's law applied to the spring. To me, the "weight force" would be the force of gravity on an object. I would not use that terminology to apply to the contact force of that object on the surface below. [/QUOTE]
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Introductory Physics Homework Help
Why is my method for finding the spring constant incorrect?
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