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Forums
Physics
Classical Physics
Finding the spring constant of a rope
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[QUOTE="erobz, post: 6857454, member: 700856"] Here is the thing...if you are modeling the rope as a spring with a constant ##k## value it has some arbitrary initial length. If you stretch it some distance ##x## it stores energy ##\frac{1}{2}kx^2##. That amount of stored energy is independent of its initial length. If a rope is stretching 30% of its initial length (before reaching ##F_{WLL}##), independent of its initial length it doesn't have a ##k## value like a linear spring has a has a ##k## value. With a single spring that has a ##k## value, if it has initial length ##l## and you stretch it some distance ##x## you will be applying a force ##F##. If it has the same constant ##k## and initial length ##5l##, and you stretch it ##x## you are still applying force ##F##. Do you see the problem? Does that description match your experience with this rope? [/QUOTE]
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Physics
Classical Physics
Finding the spring constant of a rope
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