The $x-t$ graph of a particle performing simple harmonic motion is shown in the figure. The acceleration of the particle at $t=2 s$ is :
  • A$-\frac{\pi^2}{16}\,ms ^{-2}$
  • B$\frac{\pi^2}{8}\,ms ^{-2}$
  • C$-\frac{\pi^2}{8}\,ms ^{-2}$
  • D$\frac{\pi^2}{16}\,ms ^{-2}$

     

NEET 2023, Medium
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