Question

Which one of the following statements is true for the speed $v$ and the acceleration $a$ of a particle executing simple harmonic motion?

• A. When $v$ is maximum, $a$ is maximum
• B. Value of $a$ is zero, whatever may be the value of $v$
• C. When $v$ is zero, $a$ is zero
• D. When $v$ is maximum, $a$ is zero

Answer 1

The correct option is D When $v$ is maximum, $a$ is zero

In a simple harmonic motion, acceleration is ahead of velocity in phase by $\frac{\pi }{2}$ $rad$. So, when velocity is maximum, acceleration is zero.