The total mechanical energy of a simple harmonic oscillating system is
A)zero as it passes the equilibrium point.
B)zero when it reaches the maximum displacement.
C)a maximum when it passes through the equilibrium point.
D)a minimum when it passes through the equilibrium point.
E)a non-zero constant.

Question

Quizplus · Accepted Answer

The total mechanical energy of a simple harmonic oscillating system is the sum of its kinetic energy and potential energy. As the energy is conserved, it remains constant throughout the motion. Therefore, the correct choice is E, i.e., a non-zero constant. Neither A nor B is correct as the energy is not always zero at those points. Option C is incorrect as the maximum potential energy is at the maximum displacement. Similarly, option D is incorrect as the kinetic energy is minimum at the equilibrium point but not the total mechanical energy.

The Total Mechanical Energy of a Simple Harmonic Oscillating System