Oscillation Spring Dampening Find Frequency

[JoeyBob]

Homework Statement

See attached

Relevant Equations

w=ib/2m+sqrt(k/m-(b/2m)^2)

So first I found what b/2m is and got 0.287129. Then I found what the sqrt part of the equation was and got 1.128713. Then I added them together to find w. Then I divided by 2pi to find frequency and got 0.255, but the answer is 0.180.

 

[JoeyBob]

nvm w=sqrt(ect). You ignore the imaginary portion for whatever reason.