CI 10 20 30 40 50 60 70 30 t [5] Problem 2 One day, a large drilling platform (M: 9 x 107kg) is floating in the ocean minding its own business when a tsunami passes by. The upward vertical acceleration vs time for the platform after the tsunami passes is measured by an accelerometer and plotted in the graph above. a} What is the damping constant b for this oscillation? b) What was the initial vertical displacement of the platform (give a positive answer if it was upwards and a negative answer if it was downwards)