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Question: Answered & Verified by Expert
A particle executes a simple harmonic motion of time period $T$. Find the time taken by the particle to go directly from its mean position to half the amplitude
PhysicsOscillationsMHT CETMHT CET 2011
Options:
  • A $T / 2$
  • B $\mathrm{T} / 4$
  • C $T / 8$
  • D $T / 12$
Solution:
1299 Upvotes Verified Answer
The correct answer is: $T / 12$
$y=a \sin \omega t=\frac{a \sin 2 \pi}{T} t$
At the mean position $y=\frac{a}{2}$
$$
\begin{array}{l}
\frac{a}{2}=\frac{a \sin 2 \pi t}{T} \\
t=\frac{T}{12}
\end{array}
$$

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