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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 P on the horizontal axis (see figure). When released from initial horizontal position, its instantaneous angular acceleration will be - 2 l l P 2M 0 5M 0

1. l 13 g
2. l 2 g
3. l 3 g
4. l 3 g 7

Correct answer: l 13 g

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