Question:
$Y=A \sin \left(\omega t+\phi_{0}\right)$ is the time - displacement equation of a SHM, At $t=0$ the displacement of the particle is $Y=\frac{A}{2}$ and it is moving along negative $x$-direction. Then the initial phase angle $\phi_{0}$ will be
Correct Option: , 4
Solution:
The initial phase angle $\phi_{0}=\pi-\frac{\pi}{6}$
$=\frac{5-\pi}{6}$