A rigid massless rod of length 3l 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:
(a)
(b)
(c)
(d)
A rigid massless rod of length 3l 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:
(a)
(b)
(c)
(d)
Question ID - 50279 | SaraNextGen Answer
A rigid massless rod of length 3l 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:
(a)
(b)
(c)
(d)
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A rigid massless rod of length 3l 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:
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(a) |
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(b) |
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(c) |
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(d) |
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1 Answer - 5876 Votes
3537
Answer Key : (c) -
Answer Link.png)
Applying torque equation about point P.
2m0 (21)−5 m0 gl=I
I=2M0 (21)2+5M0 I2=13 M0I2d
∴
=
⇒
= 
∴ 
=
anticlockwise
