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. When released from the initial horizontal position, its instantaneous angular acceleration will be

Question

Aicharya · Accepted Answer

Both the weight will produce torques in opposite directions,

τ_{net} = I α

(where

I \to

moment if inertia about axis of rotation)

(5 m g) l - (2 m g) (2 l) = (2 m {(2 l)}^{2} + 5 m {(l)}^{2}) α

α = \frac{g}{13 l}

A rigid massless rod of length 3 l has two masses attached at each end as shown in the figure. The rod is…

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