The homogeneous rectangular crate weighs 250 lb and is supported in the horizontal posit...

The homogeneous rectangular crate weighs 250 lb and is supported in the horizontal position by the cable at A and the corner hinge at O. If the cable at A is suddenly released, calculate the angular velocity ω of the crate just before it strikes the 30° incline. Does the weight of the crate influence the results, other quantities unchanged?