def moment_from_muad(mu, A, d):
    """moment = mu * A * d

    :param mu: shear modulus, in Pa
    :type mu: float
    :param A: area, in m^2
    :type A: float
    :param d: slip, in m
    :type d: float
    :returns: moment, in Newton-meters
    :rtype: float
    """
    return mu*A*d;