A 500-lb motor is supported by an elastic pad that deflects 0.25 in. when the motor is

Question:

A 500-lb motor is supported by an elastic pad that deflects 0.25 in. when the motor is placed on it. When the motor operates at 1750 rpm, it oscillates with an amplitude of 0.1 in. Suppose a 1500-lb platform is placed between the motor and the pad. Compute the oscillation amplitude that would result at 1750 rpm.