1. The problem statement, all variables and given/known data The collar A slides on the vertical smooth bar. Masses ma=20 kg, mb = 10 kg, and spring constant k = 250 kN/m. When h = 0.2m, the spring is unstretched. Determine the value of h when the system is at rest. 2. Relevant equations sum of all forces equal zero sum of all moments equal zero f_g=mg can some one please show me how to do this correctly?