# Difference between the tension force of the rope and that of spring

## Main Question or Discussion Point

what is the difference between the tension force of the rope and that of spring ??

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Doc Al
Mentor
what is the difference between the tension force of the rope and that of spring ??
Can you give some context for your question?

why one of them is considered conservative force and the other isn't ?

Doc Al
Mentor
why one of them is considered conservative force and the other isn't ?
Springs are generally modeled as being elastic and following Hooke's law. So a potential energy function can be defined: $PE = \frac{1}{2}k x^2$.

Ropes, on the other hand, are generally modeled as being inelastic and inextensible. (Obviously a simplification, as real ropes often do stretch appreciably under load.)