Question: A spring with a constant k=83N/m hangs vertically next to a ruler. The end of the spring is next to the 15cm mark on the ruler. If a 2.5kg mass is now attached to the end of the spring, and the mass is allowed to fall, where will the end of the spring line up with the ruler marks when the mass is at its lowest position? In the solution manual they ignored mgy2, in your response please clarify as to why if you have chosen to do the same.