A rod of length 1 m is sliding in a corner as shown in figure.

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A rod of length 1 m is sliding in a corner as shown in figure. At an instant when the rod makes an angle of 60 degrees with the horizontal plane., the velocity of point A on the rod is 1m/ s. The angular velocity of the rod at this instant is

1. 2 rad/s
2. 1.5 rad/s
3. 0.5 rad/s
4. 0.75 rad/s

Correct Option: A

VA = O'A × ω
1 = 1 cos 60° × ω
ω = 2 rad/s