A horizontal plank (m = 2.0 kg,L = 1.0 m) is pivoted at one end.A spring (k = 1.0* 103 N/m) is attached at the other end,as shown in the figure.Find the angular frequency (in rad/s) for small oscillations. 
A) 39
B) 44
C) 55
D) 66
E) 25
Correct Answer:
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