Spring 2011 Exam 1

Spring 2011 Exam 1 - DC and DB required for equilibrium if...

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Name: _______________________________ CWID #:_________________ Section Number:_______ ENSC 2113 - SPRING 2011 - EXAM #1 1 EACH PROBLEM IS WORTH 25 POINTS. BOX YOUR ANSWERS AND PROVIDE PROPER UNITS, WHERE APPLICABLE. CALCULATIONS AND FREE BODY DIAGRAMS MUST BE SHOWN THAT SUPPORT THE ANSWER TO RECEIVE CREDIT. 1) If equals 60° and F = 20 KN, determine the magnitude of the resultant force and its direction measured clockwise from the positive x axis. 2) If the bucket and its contents have a weight of 20 lb, determine the force in cables

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Unformatted text preview: DC and DB required for equilibrium if DA = {6.67i - 3.33j + 6.67k} lb. Fr = 60.35 KN 14.9 degrees clockwise from x DC = 15.56 lb DB = 1.12 lb 2 3) Determine the magnitude of the moment of the force F about a line defined from O to A. The force has coordinate direction angles of = 60°, = 120°, and = 45°. 4) Determine the resultant force and where it intersects the centerline of the beam, measured from point A. M = 190.9 lb-in Frx = 125 N left Fry = 1296 N down d = 7.36 m...
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Spring 2011 Exam 1 - DC and DB required for equilibrium if...

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