В 4.106 A vertical load P is applied at end B of rod BC. The constant of the spring is k and the spring is unstretched when 0 = 60°. (a) Neglecting the weight of the rod, express the angle 0...

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Extracted text: В 4.106 A vertical load P is applied at end B of rod BC. The constant of the spring is k and the spring is unstretched when 0 = 60°. (a) Neglecting the weight of the rod, express the angle 0 correspond- ing to the equilibrium position in terms of P, k, and l. (b) Deter- mine the values of 0 corresponding to equilibrium if P = }kl. Fig. P4.106