A 1.50 m long stick with a mass of 030 kg is pivoted on a hinge at one end and held horizontally by a spring with spring constant 10 N/m attached at the other end' What is the frequency (in Hz) of small up and down oscillations of the stick? X 1.06 A uniformly dense rigid rod with mass of 6 kg and length of 06 m rotates around its center of mass. Two springs with equal spring constants of 200 J/m2 are attached to each end of the rod (thus there are a total of four springs attached to the rod). What is the period (in s) of small amplitude oscillations of this system? X 0094