(1)3.1 For a machine foundation, given weight=100kN, spring constant = 12000 kN/m,and c =180kN-sec/m, determine:
a. damped natural frequency of the system.
b. damping ratio.
c. the logarithmic decrement.
d. the ratio of two successive amplitude.
e. Amplitude of the machine foundation 2 cycles after it is operated, assuming that at time
t = 0, A = 50 mm.