(Solved): The 25kg electric motor shown below is confined to move vertically, and is supported by four spring ...

The $25\mathrm{kg}$ electric motor shown below is confined to move vertically, and is supported by four springs, each spring having a stiffness of $200\mathrm{N}/\mathrm{m}$. If the rotor is unbalanced such that its effect is equivalent to a mass " $\mathrm{m}$ " located $300\mathrm{mm}$ from the axis of rotation, determine the amplitude of vibration in mm when the rotor is turning at angular velocity $?=15$ rad/s. The damping ratio is $0.15$. Please see a question below. Enter only numeric values on a computer. Do not enter any characters or symbols. Do not enter any negative sign or positive sign. Rounding numbers to 3 decimal places.