Damped, Forced Oscillations & Superposition
The displacement of a damped harmonic oscillator is given by
x(t) = e–0.1t cos (10t + f).
Here t is in seconds. The time taken for its amplitude of vibration to drop to half of its initial value is close to:
Show answer and solution
Answer: (c)
- Amplitude (initial value 1).
- .
- .
- So the answer is (c) 7 s.