08 Oscillations

Question 1

What is meant by the term “resonance”?

Answer 1

1. Resonance is the phenomenon in which there is a maximum transfer of energy from the driver to the oscillating system in a forced oscillation.
2. It occurs when the driving frequency matches the natural frequency of the oscillating system.
3. The oscillating system achieves maximum amplitude during resonance.

Question 2

Effect of increased damping on forced oscillations

Answer 2

At the resonance point: 1) When damping increases, amplitude decreases 2) driving frequency < natural frequency; the difference between driving & natural frequency increases as damping increases 3) driving frequency = natural frequency only for undamped oscillations

Question 3

Defining equation for simple harmonic motion

Answer 3

Question 4

angular frequency relationship with period and frequency

Answer 4

Question 5

What are the three modes of damping and their characteristics?

Answer 5