1. The problem statement, all variables and given/known data A 3.2-kg block is hanging stationary from the end of a vertical spring that is attached to the ceiling. The elastic potential energy of this spring/mass system is 1.8J. What is the elastic potential energy of the system when the 3.2-kg block is replaced by a 5.0-kg block? 2. Relevant equations Elastic potential energy=1/2kx^2 Gravitational potential energy=mgh 3. The attempt at a solution Help me please!