An inclined plane makes an angle \( 30^{\circ} \) with the \( \math...

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An inclined plane makes an angle \( 30^{\circ} \) with the
\( \mathrm{P} \) horizontal. A groove \( O A=5 \mathrm{~m} \) cut in the plane makes

W an angle \( 30^{\circ} \) with \( O X \). A short smooth cylinder is free to slide down the influence of gravity. The time taken by the cylinder to reach from A to 0 is \( \left(g=10 \mathrm{~m} / \mathrm{s}^{2}\right) \)
(1) \( 4 s \)
(2) \( 2 s \)
(3) \( 2 \sqrt{2 s} \)
(4) \( 1 \mathrm{~s} \)
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