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JEE MAIN 2019
09-01-19 S2
Question
A rod of length 50 cm is pivoted at one end. It is raised such that it makes an angle of $30^{\circ}$ from the horizontal as shown and released from rest. Its angular speed when it passes through the horizontal (in rad $\mathrm{s}^{-1}$ ) will be ( $\mathrm{g}=10 \mathrm{~ms}^{-2}$ )
Select the correct option:
A
$\frac{\sqrt{20}}{3}$
B
$\sqrt{30}$
C
$\sqrt{\frac{30}{2}}$
D
$\frac{\sqrt{30}}{2}$
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
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