# Ideal Spring and Real Spring Difference? (Hooke's Law)

by BayernBlues
Tags: difference, hooke, ideal, real, spring
 P: 66 1. The problem statement, all variables and given/known data These relate to a Hooke's law lab involving springs. What are the differences between ideal springs and real springs. Also, does anyone know why applied force is plotted on the vertical axis of a graph while x (change in displacement from equilibrium) is plotted on the horizontal even though Fx is the independent variable? 2. Relevant equations Fx= k x 3. The attempt at a solution I know that ideal springs face no internal or external friction while real springs do but not much other than that. As for the second question, I'm stumped.
 P: 4,778 Springs work the way they do because their material is within whats called a linear elastic region(the name should be self explanitory). Outside this region the spring is no longer linear. Real springs can strain harden, where the spring force goes up, or stain soften, where the spring force goes down, once your outside the elastic region.
 P: 340 A real spring has mass.
P: 66

## Ideal Spring and Real Spring Difference? (Hooke's Law)

A real spring has mass? So an ideal spring doesn't have mass?
 P: 340 Not usually.
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P: 4,082
 Quote by BayernBlues Also, does anyone know why applied force is plotted on the vertical axis of a graph while x (change in displacement from equilibrium) is plotted on the horizontal even though Fx is the independent variable? ..snip.. As for the second question, I'm stumped.

Does the "area under the F(x)-vs-x graph" have any interesting interpretation ?
 P: 66 I don't yet have the data tables graphed yet but I know that it's just a linear line so it doesn't have any interesting interpretation :-)
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