Now, im a little bit confused. in the earlier part of the question it asked me to work out the angular frequency and i used F= 1/2pie (squareroot(k/m) and got 1.83 but for this one I dont now which is the linear formula and which one to apply
The frequency, f, (in Hertz) is given by ω/2π
f = (1/2π)√(k/m
If you used that for angular frequency, you used the incorrect formula.
The formula for that is also given in my answer.
I calculate, from the values you have given here, and using the equations given,
angular frequency ω = √(3650/50) = 8.54 rads-1
frequency f = ω/2π = 8.54/2π = 1.36 Hz
How did you get 1.83?