An industrial machine weighing 1000 lb is supported by springs with a static deflection of 0.20...

An industrial machine weighing 1000 lb is supported by springs with a static deflection of 0.20 inches. The machine has a rotary unbalance of 20 lb / in. If this machine is mounted on a large concrete block weighing 2500 lb and the stiffness of the springs or supports under the block is increased so that the static deflection is still 0.20 in, what will be the dynamic amplitude?