The equation of a particle executing simple harmonic motion is given by $x =\sin \pi\left( t +\frac{1}{3}\right) m$. At $t =1 \,s$, the speed of particle will be .......... $cm s ^{-1}$ (Given : $\pi=3.14$ )
  • A$0$
  • B$157$
  • C$272$
  • D$314$
JEE MAIN 2022, Medium
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