A simple perdulum performs simple harmonic motion about $x=0$ with an amplitude $a$ and time period $T$. The speed of the pendulum at $x=a/2$ will be
  • A$\frac{{\pi A}}{T}$
  • B$\;\frac{{3{\pi ^2}A}}{T}$
  • C$\;\frac{{\pi A\sqrt 3 }}{T}$
  • D$\;\frac{{\pi A\sqrt 3 }}{{2T}}$
AIPMT 2009, Medium
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