HydrocarbonsHard
Question
The amplitude of a damped oscillator decreases to 0.9 times its original magnitude in 5s. In another 10s it will decrease to α times its original magnitude, where α equals :
Options
A.0.7
B.0.81
C.0.729
D.0.6
Solution
Also 0.9A0 = A0
so A2 = (0.9A0) (0.9)2 = 0.729 A0
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