Python/physics/hookes_law.py at 03b9e72a7b73fcaba653d1bd0b59a92dfc030e51 · TheAlgorithms/Python · GitHub

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# Hookes Law
"""
Hookes Law states that the Force is directly proportional to the extension
or compression of an elastic object, provided the limit of proportionality
is not exceeded.
Formulae : F = -k*x
F: Force
k: spring constant
x: displacement
x is the displacement from the equilibrium position
The negative sign indicates that the restoring force acts in the opposite
direction to the displacement, always working to bring the object back to
its original state.
Reference: https://en.wikipedia.org/wiki/Hooke%27s_law
"""


def hookes_law(spring_constant: float, displacement: float) -> float:
    """
    Calculate the Hookes law from the given values of spring constant 'k'
    and the displacement 'x' from the equilibrium position.
    >>> hookes_law(200, 0.05)
    -10.0
    >>> hookes_law(50, 5)
    -250
    >>> hookes_law(300, 3)
    -900
    """
    return round(-spring_constant * displacement, 2)


if __name__ == "__main__":
    import doctest

    doctest.testmod()