Question

A body executes simple harmonic motion. The potential energy $\left(PE\right)$, kinetic energy $\left(KE\right)$ and total energy $\left(TE\right)$ are measured as a function of displacement $x$. Which of the following statements is true?

• A. $TE$ is zero when $x=0$
• B. $PE$ is maximum when $x=0$
• C. $KE$ is maximum when $x=0$
• D. $KE$ is maximum when $x$ is maximum

Answer 1

The correct option is C $KE$ is maximum when $x=0$

In S.H.M., at mean position i.e. at $x=0$ kinetic energy will be maximum and $pE$ will be minimum. Total energy is always constant.