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The uniform 30- by 40-in. trap door weighs 200 lb and is propped open by the light strut AB at the angle
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Engineering Mechanics: Statics
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INTERNATIONAL EDITION---Engineering Mechanics: Statics, 14th edition (SI unit)
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- International Edition---engineering Mechanics: St...Mechanical EngineeringISBN:9781305501607Author:Andrew Pytel And Jaan KiusalaasPublisher:CENGAGE L