Question 66 of 194
The displacement of an object attached to a spring and executing simple harmonic motion is given by metres. The time at which the maximum speed first occurs is
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Answer: (A)
$\begin{aligned}
& \mathrm{x}=2 \times 10^{-2} \cos \pi t \\
& \mathrm{v}=-0.02 \pi \sin \pi t
\end{aligned}$
is maximum at
& \mathrm{x}=2 \times 10^{-2} \cos \pi t \\
& \mathrm{v}=-0.02 \pi \sin \pi t
\end{aligned}$
is maximum at