This question is confusing me. I can't get the right fundamental period.

My working

T1 = 2∏/ω1 = 2∏/3∏/8 = 16/3

T2 = 2∏/∏/2 = 4

which is the same as the solutions

but when I determine T

T1/T2 = 16/3/4 = 64/3 = k/l

T = kT2 = 64*4 = 256.... which is different to the solutions (T = 12)

what is going on here???

thanks guys