The constant of spring AB is k, and the spring ring is unstretched when = 0.
Question:
The constant of spring AB is k, and the spring ring is unstretched when θ = 0.
(a) Neglecting the weight of the rigid arm BCD, derive an equation in terms of θ, k, a, l, and W that is satisfied when the arm is in equilibrium.
(b) Determine three values of θ corresponding to equilibrium when k = 75 lb/in., a=10 in., l = 15 in., and W=100 lb. State in each case whether the equilibrium is stable, unstable, or neutral.
.PNG)
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a BA e a We note that in A ABC LA LB 1 006 081 8 45 Thus AB 2a cos 45 20000 450 2a cos 45 cos sin 15 ...View the full answer
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Related Book For 
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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