Determine the correct expression for potential energy. What is the correct general expression for the potential energy?

View Available Hint$($s$)$for Part D

Ugrav$=$mgyUgrav$=$mgyUel$=12$ky$2$Uel$=12$ky$2$U$=$mgy$+12$mv$2$U$=$mgy$+12$mv$2$U$=$mgy$+12$ky$2$U$=$mgy$+12$ky$2$U$=$mgy$+12$ky$2+12$mv$2$U$=$mgy$+12$ky$2+12$mv$2$