Free, damped and forced oscillations - class-XI
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Multiple Choice
$mx^{2} - bx + k = 0$. Find time after which to the energy will become half of initial maximum value in damped forced oscillation.
- $t = \dfrac {m}{b} + \dfrac {1}{2} ln2$
- $t = \dfrac {m}{b} \times \dfrac {2}{3} ln2$
- $t = \dfrac {m}{b} - \dfrac {1}{2} ln2$
- $t = \dfrac {m}{b} \times \dfrac {1}{2} ln2$