Question

the vibration absorber used in the train railway to protect the sensitive load from big acceleration because of the periodic excitation given by the railway connection.
for the certain train, the railway connection has space 5 m. the railway coach when empthy, has mass 25000 kg. using 2 vibration absorber, each has mass 12000kg.
the vibrator for certain railway coach is designed to vanish vibration from main mass when railway coach is loaded with 12000 kgcargo and moves at 100 m/s.
the natural frequeny of railway coach without load is 165 rad/s.
a. at what speed/velocity that will be a resonance at 12000 kg load ?
b. how much is the best velocity for the railway coach when loaded with 25000 kg cargo?

Answer 1