The mass on a loaded spiral spring oscillates vertically between two extreme positions P and R equidistant from the equilibrium position Q. Which of the following statements about the system is not correct
-
A.
the momentum of the mass is maximum at Q -
B.
the elastic potential energy of the spring is maximum at Q -
C.
the kinetic energy of the mass is maximum at P -
D.
the total energy of the system is always constant