Q.1 (d) An instrument package having mass of 125 kg is to be mounted in a train on console that experiences a vibration amplitude of 10 mm at a frequency of 35 Hz while the train is running. Determine (a) the spring constant necessary for a mount in order to achieve 80% isolation and (b) the resulting vibration amplitude of the instrument package. Neglect the damping in the system.

Q.1 (d) An instrument package having mass of 125 kg is to be mounted in a train on console that experiences a vibration amplitude of 10 mm at a frequency of 35 Hz while the train is running. Determine (a) the spring constant necessary for a mount in order to achieve 80% isolation and (b) the resulting vibration amplitude of the instrument package. Neglect the damping in the system.