An undamped spring mass system has a mass of 10 kg and a spring stiffness of 2250 N/m. It is excited by a harmonic force having a sine function characteristic with amplitude of 200 N and an excitation frequency of 15 rad/s. The initial displacement and the velocity are 0.15 m and 1.5 m/s respectively.
The Particular solution at t = 2s
Answer 1
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The frequency ratio is:
