Need answers to this question on Harmonic oscillator, so that i can compare your solution to mine.
A homogeneous stick of length l = 1.0 m and mass m = 0.30 kg is hinged at one end and is connected to a spring with k = 40 N/m at its other end. The stick performs a harmonic oscillation with small deflections. Friction can be neglected. The moment of inertia of a stick around one end is J= (M.I^2)/3
a) Determine the equation of motion for the angular oscillation of the stick.
b) Calculate its oscillation period. @OCW Scholar -

Question

Need answers to this question on Harmonic oscillator, so that i can compare your solution to mine.
A homogeneous stick of length l = 1.0 m and mass m = 0.30 kg is hinged at one end and is connected to a spring with k = 40 N/m at its other end. The stick performs a harmonic oscillation with small deflections. Friction can be neglected. The moment of inertia of a stick around one end is J= (M.I^2)/3
a) Determine the equation of motion for the angular oscillation of the stick.
b) Calculate its oscillation period.       @OCW Scholar -

anonymous · Answer

What is the orientation of the setup?  How should we account for gravity?

anonymous · Answer

I am not fully sure about this .. I confirm this in a few days 
1/2(Iw^2)=(kx^2)/2 replacing I
i got w= 4.5 rad/s|dw:1321707504259:dw|