Angle θ is equal to 45° after a block of weight W is hung from member AB

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Angle θ is equal to 45° after a block of weight W is hung from member AB as shown. Neglecting the weight of AB and knowing that the spring is unstretched when θ =20°, determine the value of W, and state whether the equilibrium is stable, unstable, or neutral.


18 in. .C 4 in. k= 1.5 lh/in.


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Vector Mechanics for Engineers Statics and Dynamics

ISBN: 978-0073212227

8th Edition

Authors: Ferdinand Beer, E. Russell Johnston, Jr., Elliot Eisenberg, William Clausen, David Mazurek, Phillip Cornwell

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