Question

The phase difference between the displacement and acceleration of particle executing $\text{S.H.M.}$ $\left(\text{in radian}\right)$ is

• A. $\text{Zero}$
• B. $\frac{\pi }{2}$
• C. $\pi$
• D. $2\pi$

Answer 1

The correct option is C $\pi$

Since $y=A\sin \varphi$ and Acceleration $a=-{\omega }^{2}A\sin \varphi ={\omega }^{2}A\sin (\pi +\varphi )$
So, acceleration is ahead of displacement by a phase $\pi \text{rad}$