A System Consists of a Mass Vibrating on the End

Multiple Choice

A system consists of a mass vibrating on the end of a spring.The total mechanical energy of this system

A) varies as a sine or cosine function.
B) is constant only when the mass is at maximum displacement.
C) is a maximum when the mass is at its equilibrium position only.
D) is constant,regardless of the displacement of the mass from the equilibrium position.
E) is always equal to the square of the amplitude.