A body executes simple harmonic motion. The potential energy (P.E), the kinetic energy (K.E) and energy (T.E) are measured as a function of displacement `x`. Which of the following staements is true?

Options

A. KE is maximum when `x = 0`
B. `TE` is zero, when `x = 0`
C. `KE` is maximum when `x` is maximum
D. `PE` is maximum when `x = 0`

Answer

A

Explanation

A harmonic oscillator crosses the mean position with maximum speed hence kinetic energy is maximum at mean position (i.e. `x = 0`)
Total energy of the harmonic oscillator is a constant.
PE is maximum at the extreme position.