Euler? I barey know her!

Submission to MariHacks Math Challenge W26. Simulation of physical principles using Euler's method, representation of phase space and determining error in the methods.

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Numerical simulation of a pendulum (mass on a string), a simple harmonic oscillator (mass on a spring), and a two body problem using Euler's method, representing the phase space, noting and quantifying the error in the method in comparison to the exact value.