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A wall is inclined to a horizontal surfa...

A wall is inclined to a horizontal surface at an angle of `120^(@)` as shown. A rod AB of length `L = 0.75 m` is sliding with its two ends A and B on the horizontal surface and on the wall respectively. At the moment angle `theta = 20^(@)` (see figure), the velocity of end A is `v_(A) = 1.5` m/s towards right. Calculate the angular speed of the rod at this instant. [Take `cos 40^(@) = 0.766` ]

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The correct Answer is:
2.26 rad/s
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