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Which one of the following statements about an oscillating mechanical system at resonance, when it oscillates with a constant amplitude, is not correct?
A The amplitude of oscillations depends on the amount of damping.
B The frequency of the applied force is the same as the natural frequency of oscillation of the system.
C The total energy of the system is constant.
D The applied force prevents the amplitude from becoming too large.
The answer is A. Can someone please explain why A in incorrect, and why D is correct?
Thank you very much.
A The amplitude of oscillations depends on the amount of damping.
B The frequency of the applied force is the same as the natural frequency of oscillation of the system.
C The total energy of the system is constant.
D The applied force prevents the amplitude from becoming too large.
The answer is A. Can someone please explain why A in incorrect, and why D is correct?
Thank you very much.