In this recipe, we will give an application example of the function minimization algorithms described earlier. We will try to numerically find the equilibrium state of a physical system by minimizing its potential energy.

More specifically, we'll consider a structure made of masses and springs, attached to a vertical wall and subject to gravity. Starting from an initial position, we'll search for the equilibrium configuration where the gravity and elastic forces compensate.

- Let's import NumPy, SciPy, and matplotlib:
>>> import numpy as np import scipy.optimize as opt import matplotlib.pyplot as plt %matplotlib inline

- We define a few constants in the ...

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