Values of the acceleration $A$ of a particle moving in simple harmonic motion as a function of its displacement $x$ are given in the table below. The period of the motion is
$A (mm \,\,s^{-2}$)
$16$
$8$
$0$
$- 8$
$- 16$
$x\;(mm)$
$- 4$
$- 2$
$0$
$2$
$4$
A$\frac{1}{\pi }s$
B$\frac{2}{\pi }s$
C$\frac{\pi }{2}s$
D$\pi \,s$
Medium
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D$\pi \,s$
d (d) $|A| = \omega^2x$ ==> $\frac{{|A|}}{x} = {\omega ^2}$
From the given value $\frac{{|A|}}{x} = {\omega ^2} = 4$ ==> $\omega = 2.$
Also $\omega = \frac{{2\pi }}{T} \Rightarrow 2 = \frac{{2\pi }}{T}\, \Rightarrow T = \pi \,sec$
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