What is the formula for calculating angular velocity of a rotating bar?

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SUMMARY

The formula for calculating the angular velocity of a rotating bar, specifically bar AB rotating about point A, involves summing the moments about the point of rotation. When a constant force is applied, this sum equals the product of the angular acceleration and the moment of inertia. The angular velocity can be determined by adding the initial velocity to the product of angular acceleration and time.

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If we have a bar AB which can rotate about A and there is a force applied on AB, make it rotate. Is there any formula for us to calculate the angular velocity of this bar?
 
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If the applied force is constant, sum the moments about the point of rotation. This value is equivalent to the product of the angular acceleration and the moment of inertia. The velocity of the rotating object will be the sum of its initial velocity and the acceleration x time.
 

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