Hi, can I get some help with this?
The question is:
Consider the following IVP for a mass of m = 2 kg attached to a spring with a spring constant k = 9 N/m. The spring mass system is in a medium with damping constant b.
2y" + by' + 9y = 0
y(0) = 0, D(y)(0) = -3
It then asks find three values b1, b2, b3 where b1 is underdamped, b2 is critical, b3 is over.
I set b1 as 1, b2 as sqt 72, b3 as 9.
Then it asks to find the quasi period.
I can't get my quasi period right. My answer is 2pi/ sqrt (4.5).