9.0 kg of mercury are poured into a glass u-tube. The tube’s inner diameter is 1.2…

9.0 kg of mercury
are poured into a glass u-tube. The tube’s inner diameter is 1.2
cm and the mercury oscillates freely up and down about its position
of equilibrium (x=0). Calculate the spring constant for the
oscillation and the period of oscillation. You may safely ignore
any friction of surface tension effects.
r= 13.6 x 10 /?