The uniform bar AB has weight W If the attached spring is unstretched when 90 deg, use the principle of potential energy and determine the angle for equilibrium Investigate the stability of the equilibrium positions Note that the spring always remains in the vertical position due to the roller guid...

V Wasin0 ka a sin0 Wa sin8 ka 1 Equilibrium d V Wacos 0 ka1 sin0 cos 0 ...

The uniform bar AB has weight W. If the attached spring is unstretched when = 90

Question:

The uniform bar AB has weight W. If the attached spring is unstretched when θ = 90 deg, use the principle of potential energy and determine the angle θ for equilibrium. Investigate the stability of the equilibrium positions. Note that the spring always remains in the vertical position due to the roller guide.

Given:

W = 10 lb

K = 5 1b/ft

a = 4 ft

The uniform bar AB has weight W. If the attached spring