An harmonic oscilator is made by hanging a mass of 23g to the end of a spring and separating the mass 7.5cm from it´s balance position. Before, we mesured the length without moving and without the mass which was 23,3cm and then with the mass on was 28.8cm. Find the angular velocity (pulse)

What is your attempt at the question?

F=Kx
mg=k0.055
0.023x9.81=k0.055
k=4.1
w=Sqrt(k/m)=Sqrt(4.1/0.023)=13.25 rad/s
Yes I did it, thanks a lot, I guess I just had to look at it with fresh eyes

Well done, some problems just require you to put a little more attention for you to solve :)

One tiny detail. Since the data given to you is to 3 sf, your final answer should also be in 3 sf, namely, 13.3 rad/s.