spring loaded with a mass of 2.0 kg extends 1.0 m to the equilibrium level P. The mass is further pulled vertically down 0.5 m to level Q and released. Take Q as the (zero) reference level for the gravitational potential energy. a) Complete the following table. Position P Q gravitational potential energy of the 2.0 kg mass (J) elastic potential energy stored in the spring (J) kinetic energy of the 2.0 kg mass (J) total energy of the system (J) b) Find the speed of the mass at level P