A ball of mass \(m\) can perform undamped harmonic oscillations about the point \(x=0\) with natural frequency \(\omega_{0}\). At the moment \(t=0,\) when the ball was in equilibrium, a force \(F_{x}=F_{0} \cos \omega t\) coinciding with the \(x\) axis was applied to it. Find the law of forced oscillation \(x(t)\) for that ball.