L20EX1-Firetruck - To decrease the angle of elevation of...

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Problem Type: Find:Force at O and angular acceleration of the ladderFirst Step? Rigid Body KineticsFBD and MAD. Asks for forces at O, so will do MAD and FBD for the ladder. Do it.OxOymgmaGxmaGyIGαxy
To decrease the angle of elevation of the stationary 200-kg ladder, the gears that raised it are disengaged, and a fraction of a second later a second set of gears that lower it are engaged. At the instant the gears that raised the ladder are disengaged, what is the ladder’s angular acceleration and what are the components of force exerted on the ladder by its support at O
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