The uniform bar AD has a mass of 20 kg. If the attached
Chapter 11, Problem 11-34(choose chapter or problem)
The uniform bar AD has a mass of 20 kg. If the attached spring is unstretched when u = 90, determine the angle u for equilibrium. Note that the spring always remains in the vertical position due to the roller guide. Investigate the stability of the bar when it is in the equilibrium position.
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