A spring stretches by 2 mm when it is loaded with a mass of 200 g. From equilibrium position the mass is further pulled down by 2 mm and released.…

A spring stretches by $\displaystyle 2$ mm when it is loaded with a mass of $\displaystyle 200$ g . From equilibrium position the mass is further pulled down by $\displaystyle 2$ mm and released. The frequency associated with the system and maxmimum energy in the spring are $\displaystyle \_\_\_\_$ Hz and $\displaystyle \_\_\_\_$ J, respectively. (Take $\displaystyle \mathrm{g}=10 \mathrm{~m} / \mathrm{s}^2$ )