1. The problem statement, all variables and given/known data A .3 kg mass rest on top of a spring that has been compressed by .04 m. Neglect any frictional effects, and consider the spring to be massless. Then, if the spring has a constant k equal to 2000 n/m, to what height will the mass rise when the system is released. 2. Relevant equations PE(spring)= (1/2)kx^2 KE= 1/2mv^2 3. The attempt at a solution I got the PE in the system to be 1.6 J. Im not sure how this would translate into a vertical height. Thanks in advance!