Which of the following figures represents damped harmonic motion?

The amplitude of a damped harmonic oscillator becomes half in $3 \ s$ and will become $1/x$ of the initial amplitude in the next $6 \ s$,where $x$ is:

Define: Natural oscillations,free oscillations,and forced oscillations.

When two violin wires with different fundamental frequencies are vibrated to play some music,can they produce resonance?

What are damped oscillations? Discuss them using the illustration of a spring.

The displacement of a damped oscillator is $x(t) = \exp(-0.2 t) \cos(3.2 t + \Phi)$,where $t$ is time in seconds. The time required for the amplitude of the oscillator to become $\frac{1}{e^{1.2}}$ times its initial amplitude is (in $s$)