Question:
A rigid massless rod of length $3 l$ has two masses attached at each end as shown in the figure. The rod is pivoted at point $\mathrm{P}$ on the horizontal axis (see figure). When released from initial horizontal position, its instantaneous angular acceleration will be:
$\frac{\mathrm{g}}{13 l}$
$\frac{\mathrm{g}}{3 l}$
$\frac{\mathrm{g}}{2 l}$
$\frac{7 \mathrm{~g}}{3 l}$
Question of from chapter.
JEE Main Previous Year 10 Jan. 2019
Correct Option: 1
Solution:
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