188- The velocity–time graph of a spring–mass oscillator is shown below. According to the graph, how many seconds after $t = 0$ does the magnitude of the oscillator's acceleration first become $4\pi^2\ \frac{\text{cm}}{\text{s}^2}$? [Figure: Velocity (cm/s) vs time (s) graph showing a sinusoidal curve with amplitude $2\pi$ and period approximately 2 s; the curve starts at 0, reaches $+2\pi$ then $-2\pi$] (1) $\dfrac{1}{2}$ (2) $\dfrac{1}{6}$ (3) $\dfrac{1}{9}$ (4) $\dfrac{1}{12}$ \begin{flushright} \fbox{Workspace} \end{flushright} %% Page 17 Physics120-CPage 16
\textbf{188-} The velocity–time graph of a spring–mass oscillator is shown below. According to the graph, how many seconds after $t = 0$ does the magnitude of the oscillator's acceleration first become $4\pi^2\ \frac{\text{cm}}{\text{s}^2}$?
\begin{center}
\textit{[Figure: Velocity (cm/s) vs time (s) graph showing a sinusoidal curve with amplitude $2\pi$ and period approximately 2 s; the curve starts at 0, reaches $+2\pi$ then $-2\pi$]}
\end{center}
\begin{center}
(1) $\dfrac{1}{2}$ \hspace{2cm} (2) $\dfrac{1}{6}$ \hspace{2cm} (3) $\dfrac{1}{9}$ \hspace{2cm} (4) $\dfrac{1}{12}$
\end{center}
\begin{flushright}
\fbox{Workspace}
\end{flushright}
%% Page 17
\textbf{Physics} \hfill \textbf{120-C} \hfill \textbf{Page 16}