Two aluminum rods AB and BC, hinged to rigid to supports and pinned together at B to carry a vertical load P= 6000lb. If each rod has a cross-sectional area of 0.60 in.2 and E= 10x106 psi, compute (a) the elongation of each rod, and (b) the horizontal and vertical displacements of point B. Assume α = 300 and 0 =300. L=10 ft B L= 6 ft P