A 150-kg washing machine has a rotating unbalance of \(0.45 \mathrm{~kg} \cdot \mathrm{m}\). The machine is placed on isolators of equivalent stiffness \(4 \times 10^{5} \mathrm{~N} / \mathrm{m}\) and damping ratio 0.08 . Over what range of operating speeds will the transmitted force between the washing machine and the floor be less than \(3000 \mathrm{~N}\) ?