$y = 2\, (cm)\, sin\,\left[ {\frac{{\pi t}}{2} + \phi } \right]$ what is the maximum acceleration of the particle doing the $S.H.M.$
  • A$\frac{\pi }{2}\,cm/s^2$
  • B$\frac{\pi^2 }{2}\,cm/s^2$
  • C$\frac{\pi^2 }{4}\,cm/s^2$
  • D$\frac{\pi }{4}\,cm/s^2$
AIIMS 2014, Medium
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