Two particles are executing $SHM$ of the same amplitude $A$ and frequency $\omega $ along the $x-$ axis. Their mean position is separated by $X_0$ (where $X_0 > A$ ). If maximum separation between them is $X_0 + 2A$ , then the phase difference between their motion is
A$\frac {\pi}{2}$
B$\pi $
C$\frac {\pi}{3}$
D$\frac {\pi}{4}$
Medium
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B$\pi $
b One of the particle will at positive extreme while other at negative extreme.
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