問題詳情
22. Consider a damped harmonic oscillator, which of the following is true?
(A)If it is underdamped, the resonant frequency increases with larger damping;
(B) If it is underdamped, the amplitude decays faster with larger damping;
(C)If it is underdamped, and is driven by an external sinusoidal force, theamplitude of the oscillation is maximum if the frequency of the force is thesame as the resonance frequency;
(D) In order to damp the kinetic energyand the elastic energy as fast as possible, one should design the oscillator tobe at critical damping condition;
(E) If it is overdamped, the system does notoscillate and returns to the equilibrium position slowly.
參考答案
答案:B,C,D,E
難度:計算中-1
書單:沒有書單,新增