Physics - EMI/AC Question with Solution | TestHub

For a lightly damped harmonic oscillator, the amplitude of oscillation decreases exponentially with time according to $A(t)=A_0{e}^{-bt/2m}$. The total mechanical energy is not constant; it decreases due to damping. The angular frequency of oscillation is lower than the undamped frequency. The phase difference between displacement and velocity is not exactly $\pi /2$ due to damping.