Quiz2Solutions - Quiz 2 Author SachinGoyal Copyright 2009...

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Copyright © 2009 Cornell University. All rights reserved. 1 Author:  Sachin Goyal Quiz  2
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Copyright © 2009 Cornell University. All rights reserved. 2 Author:  Sachin Goyal Free Body  Diagrams P = 2N Ax Ay B y Bx 60   Bx B y Fy Fx/   Fx
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Copyright © 2009 Cornell University. All rights reserved. 3 Author:  Sachin Goyal Part (a) Fx =  ? 1. Balancing moments on member AB about A, we get Bx = P sin(60+ ) = � 3 N 2. Balancing horizontal forces on member BCD, we get Fx = -Bx = -# 3 N (opposite to the direction shown on FBD)
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Copyright © 2009 Cornell University. All rights reserved. 4 Author:  Sachin Goyal Part (b) Min Fy = ? On the left or right of  C? 1. Fy Fx/ °  implies  Fy 3N (minimum magnitude) 2. Angle of static friction = 30*  implies that the maximum angle  that the resultant of Fx and Fy can make with the vertical is  30� . But the line of action of the resultant should pass through  B. The depiction of this idea in the figure below clearly shows 
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