Consider there are 2 identical springs.
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One end of the first spring is attached to the wall and the other end is pulled by a force $\vec{F}$. It is depicted as shown in the first figure below.
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Both ends of the second spring is pulled by a force $\vec{F}$. It is depicted as shown in the second figure below.
Is the elongation for the first case identical to the second case?
Best Answer
Yes, Spring elongation is $\delta= \frac{F}{k}$ regardless of where $F$ comes from.