an ideal spring hangs from the ceiling. a $2\mathrm{.}25$ kg mass is hung from the spring, stretching the spring a distance d$=0\mathrm{.}0885$ m from its original length when it reaches equilibrium. the mass is then lifted up a distance L$-0\mathrm{.}0265$ m from the equilibrium position and released. what is the kinetic energy K of the mass at the instant it passes back through the equilibrium position?