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Questions  

The amplitude of a damped oscillator becomes half in one minute. The amplitude after 3 minutes will be 1/x times the initial amplitude, where x is 

a
6
b
8
c
9
d
12

detailed solution

Correct option is B

At=A0e−kt  where k=constant∴A02=A0e−kt ⇒e−kt =12   ⇒ e−k = 12 ∴ t = 1secAgain A0x=A0e−3k⇒1x =123⇒x=8

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Similar Questions

In damped oscillations, damping force is directly proportional to speed of oscillator. If amplitude becomes half of its maximum value in 1 s, then after 2 s amplitude will be (Ao-initial amplitude)


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