This is a striking result and illustrates the power and simplicity of describing the coupled motion in terms of the normal coordinates. For each of the independent coordinates q1 and q2 we have the equation for forced oscillations of a simple harmonic oscillator, i.e. an equation of the same form as Equation (3.1) in Section 3.2.1, and we can at once take over the solutions, Equations (3.5a) and (3.7a), from that section. We can describe the steady state solutions by the equations q1 = C1 cosωt and q2 = C2 cosωt, where