Can I get answer Prediction 2-1 , 2-2?

Prediction 2-1: Hang the 200-g mass from the spring. Start it oscillating by pulling it down a small distance and letting it go. As the mass oscillates up and down, what equation would give the mechanical energy, including elastic poten- tial energy and kinetic energy? (Note that since the mass oscillates up and down around its new equilibrium position, which is where the spring force just balances out the gravitational force [weight of the mass], you don't need to consider grav- itational potential energy.) Prediction 2-2: As the mass oscillates up and down, how will the kinetic energy change? How will the elastic potential energy change? How will the mechanical energy change